View source for X

{{also|Appendix:Variations of "x"}}
{{minitoc}}
{{character info}}
{{character info/var|Ⅹ|Ｘ|𜳭}}
==Translingual==
{{wp}}

===Etymology 1===
From the {{der|mul|ett|-}} letter {{m|ett|𐌗||ex}}, from the {{der|mul|grc|-}} letter {{m|grc|Χ||chi}}, created ''[[ex nihilo]]''.

====Letter====
{{letter|mul}}

# {{Latn-def|mul|letter|24}}

=====See also=====
{{Latn-script}}

====Numeral====
{{enum|mul|IX|XI|Roman numeral|X}}
{{mul-number}}

# {{senseid|mul|ten}} The [[Roman numeral]] [[ten]] ([[10]]).
# {{cln|mul|ordinal numbers}} {{lb|mul|especially in the names of aristocracy}} The [[tenth]].
# {{senseid|mul|Q124}} [[October#English:_Q124|October]].<!--in various European languages, now archaic but formerly common-->
#: {{comeronyms|mul|I<id:Q108>|i<id:Q108>|1<id:Q108>|;|II<id:Q109>|ii<id:Q109>|2<id:Q109>|;|III<id:Q110>|iii<id:Q110>|3<id:Q110>|;|IV<id:Q118>|iv<id:Q118>|4<id:Q118>|;|V<id:Q119>|v<id:Q119>|5<id:Q119>|;|VI<id:Q120>|vi<id:Q120>|6<id:Q120>|;|VII<id:Q121>|vii<id:Q121>|7<id:Q121>|;|VIII<id:Q122>|viii<id:Q122>|8<id:Q122>|;|IX<id:Q123>|ix<id:Q123>|9<id:Q123>|;|XI<id:Q125>|xi<id:Q125>|11<id:Q125>|;|XII<id:Q126>|xii<id:Q126>|12<id:Q126>}}

=====Alternative forms=====
* {{alt|mul|x}}
* {{alt|mul|VV|vv||nonstandard}}
* {{alt|mul|X.||ordinal}}

=====Derived terms=====
* {{l|en|OS X}}
* {{l|en|Sol X}}

====Symbol====
{{mul-symbol}}

# {{lb|mul|bowling}} A {{l|en|strike}}.
#: {{cot|mul|/<qq:spare>}}
# {{lb|mul|sports}} A {{l|en|fail}}.
#: {{cot|mul|O<qq:success>|-<qq:skip>}}
# One of the [[tristimulus]] values which, with [[Y]] and [[Z]], defines coordinates in a three-dimensional [[color space]]. Pronounced (in English) ''big X'' or ''cap X''.
#* {{quote-book|en|termlang=mul|year=2003|author=Charles A. Poynton|title=Digital Video and HDTV: Algorithms and Interfaces|isbn=9781558607927|page=217
|passage='''X''''', ''Y'' and ''Z'' are pronounced ''big-X'', ''big-Y'', and ''big-Z'', or ''cap-X'', ''cap-Y'', and ''cap-Z'', to distinguish them from little ''x'' and little ''y'', to be described in a moment.''}}
# {{senseid|mul|placeholder}} {{ng|A [[placeholder]] for any [[letter]] or [[word]].}}
#: {{alti|mul|x<id:placeholder>}}
# {{senseid|mul|kiss}} {{alternative case form of|mul|x|id=kiss|t=a [[kiss]]}}
#* {{quote-book|en|termlang=mul|year=2017|author=w:Jason Wallace|title=Encounters|url=https://archive.org/details/encountersinspir0000wall/page/n6/mode/1up|location=London|publisher=w:Andersen Press|isbn=978 1 78344 528 8|passage=For Hugo – treat life well '''X'''}}
# {{lb|mul|linguistics}} {{ng|A [[wildcard]] for any [[sound]] (consonant, vowel or tone).}}
# {{lb|mul|international standards}} {{ng|Substituted for the third letter of a [[currency code]] to denote the minor unit of that [[currency]].}}
# {{lb|mul|chemistry}} {{U|halogen}}.
# The symbol in [[base]]s higher than [[thirty-three]] for the number expressed as {{l|mul|33}} in decimal.

===Etymology 2===
Possibly from [[skull and crossbones]].

====Symbol====
{{mul-symbol}}

# {{ng|A hazard indicator, sometimes incorporated into standard labeling and signage systems}}.

=====Derived terms=====
* {{l|mul|XXX}}

===Gallery===
<gallery class="skin-invert-image" caption="Letter styles" perrow="3" mode="packed">
Image:Latin X.png|Uppercase and lowercase versions of '''X''', in normal and italic type
Image:Fraktur letter x.svg|Uppercase and lowercase '''X''' in [[Fraktur]]
</gallery>

===See also===
{{Letter
|page=X
|NATO=X-ray
|Morse=–··–
|Braille=⠭
}}

{{cat|mul|Roman numerals}}
{{cln|mul|cardinal numbers}}
{{C|mul|Ten}}

==English==

===Pronunciation===
* {{q|letter name}} {{IPA|en|/ɛks/}}
* {{audio|en|en-us-X.ogg|a=US}}
* {{q|phoneme}}
** {{IPA|en|/ks/|/ɡz/|/kʃ/|/ɡʒ/}}
** {{IPA|en|/z/|/ʃ/}} {{q|word-initially}}
* {{audio|en|LL-Q1860 (eng)-Flame, not lame-X.wav|a=US}}
* {{rhymes|en|ɛks|s=1}}
* {{hmp|en|Exe}}

===Etymology 1===
{{etymid|en|quantity}}
Introduced by [[w:René Descartes|René Descartes]] in the context of mathematical notation, but has since widened to other contexts.

====Numeral====
{{head|en|numeral}}

# An unknown [[quantity]] or unknown value.
#: {{alti|en|x<id:quantity>}}
#: {{ux|en|Let '''''X''''' represent the forecast traffic flow in 20 years’ time.}}
#* {{quote-web|en|author=Richard Johns|title=Why Physicalism Seems to Be (and Is) Incompatible with Intentionality|url=https://www.newdualism.org/papers-Jul2020/Johns-ActaAnalytica2020_WhyPhysicalismSeemsToBeAndIsIn.pdf|doi=10.1007/s12136-020-00423-3|date=2020-01-30|page=7-8|work=Acta Analytica|passage=To know whether a word '''X''' is heterological, we must already know what '''X''' means. (By contrast, I can know that the word “subdermatoglyphic” has certain syntactic properties—it is six-syllabled, contains the letter “m”, etc.— without having any idea of its meaning.) This indirectness is fine as long as '''X''' already has an assigned meaning, for in that case the meaning of “heterological” is ultimately grounded. But when '''X''' is the word “heterological”, then we are trying to define “heterological” in terms of itself. We have a closed circle, and a contradictory one, due to the negation operator in the definition.|archiveurl=https://web.archive.org/web/20250710223803/https://www.newdualism.org/papers-Jul2020/Johns-ActaAnalytica2020_WhyPhysicalismSeemsToBeAndIsIn.pdf}}

=====Derived terms=====
{{col3|en|X-seam
|Generation X|double X|cardiac syndrome X|X organ
|Planet X|ATR-X syndrome|X-patent|X-sona
|X chromosome
|X factor|X-outing|Malcolm X tea|Ancestor X|X-machine
}}
{{col3|en|title=X chromosome
|[[45,X]]
|[[45,X0]]
|triple X syndrome
|X-ALD
|X-linked
|X-linked gene
|X-linked trait
|XX
|XXX
|XXXX
}}

=====Translations=====
{{trans-top|unknown quantity or unknown value|id=quantity}}{{multitrans|data=
* Arabic: {{tt+|ar|س}} {{q|unknown variable}}
* Finnish: {{tt+|fi|X}}, {{t+|fi|tuntematon}}
* French: {{tt+|fr|X}}
* German: {{tt+|de|x|n}}
* Macedonian: {{tt|mk|X}}, {{tt|mk|икс|m}}
* Russian: {{tt+|ru|X|n|tr=-|sc=Latn}}, {{tt+|ru|икс|n}}
* Swedish: {{tt+|sv|X}}
}}
{{trans-bottom}}

====Proper noun====
[[File:X logo 2023.svg|class=skin-invert-image|thumb|Logo of the social media network ''({{senseno|en|social media}})'']]

{{en-prop}}

# {{ng|A [[placeholder]] for an unknown, suppressed or hypothetical name.}}
#: {{ux|en|The woman known until now as Witness '''X''' has been unmasked after a court ruling.}}
#: {{ux|en|Suppose that Mr and Mrs '''X''' have been married for many years.}}
#* {{quote-journal
|en
|year=2023
|month=November<!--https://web.archive.org/web/20231221124451/https://scholarship.law.duke.edu/dlj/vol73/iss2/-->
|first=Andrea L. R.
|last=Pillai
|title=Hawks and Doves: Evaluating Presidential Powers and Duties Against Congress's Power to Declare War
|journal=w:Duke Law Journal
|archiveurl=https://web.archive.org/web/20240311004741/https://scholarship.law.duke.edu/cgi/viewcontent.cgi?article=4176&context=dlj
|url=https://scholarship.law.duke.edu/cgi/viewcontent.cgi?article=4176&context=dlj
|archivedate=March 11, 2024
|volume=73
|issue=2
|issn=0012-7086
|oclc=44197618
|page=419
|text=Although the Take Care Clause grants the president significant authority to enforce the laws, the duty to take care does not include a power to forbid the execution of the laws. Consequently, the president does not have the authority to disregard Congress’s declaration of war against Country '''''X'''''. On the contrary, the president has an obligation to faithfully execute the declaration of war, even against their own beliefs and wishes.}}
# {{lb|en|anthroponymy|politics}} {{surname|en|addl=used by those who have had their identity or heritage, including their proper ancestral names, erased or forgotten.}}
#: {{ux|en|{{w|Malcolm '''X'''}}}}
# {{senseid|en|social media}} {{lb|en|social media}} An [[online]] [[social media]] [[network]], formerly known as [[Twitter]].
#: {{alti|mul|𝕏}}
#* {{RQ:Guardian|author=Richard Luscombe|title=Marco Rubio appoints himself head of USAid as workers locked out of office|date=2025-02-03|url=https://www.theguardian.com/us-news/2025/feb/03/usaid-closed-trump-musk|passage=Two senior USAid security officials were suspended on Sunday for blocking Doge officials from a restricted area, a day after the agency’s website went offline, and Musk posted to '''X''' that USAid was “beyond repair” and needed to be shut down.|archiveurl=https://web.archive.org/web/20250404235218/https://www.theguardian.com/us-news/2025/feb/03/usaid-closed-trump-musk}}

=====Usage notes=====
* Despite officially rebranding to {{m|en||X}} in July 2023, the social network is still commonly referred to as {{m|en|Twitter}}.

=====Derived terms=====
{{col3|en|title=placeholder|Algorithm X|Australian X disease|brand X|hepatitis X|Hosta virus X|potato virus X|Xpiritualism}}
{{col3|en|title=surname|Talcum X}}
{{col3|en|title=social media network|xeet|Xitler|Xitter|xvideo<id:video on X>}}

=====Translations=====
{{trans-top|online social media network}}
* Chinese:
*: Mandarin: {{t|cmn|黑叉|tr=hēichā}} {{q|slang}}
{{trans-bottom}}

====Further reading====
* {{pedia|X (social network)}}

===Etymology 2===
{{etymid|en|letter}}

====Letter====
{{letter|en}}

# {{Latn-def|en|letter|24|ex}}

=====See also=====
{{list:Latin script letters/en}}

====Noun====
{{head|en|noun}}

# {{senseid|en|mark}} Any [[mark]] that looks like that letter, such as a mark made by a person who cannot read or write in lieu of a [[signature]].
# {{lb|en|lacrosse}} The spot behind the [[goal]].

=====Derived terms=====
{{col|en|title=cross mark|X marks the spot|X out|XXX}}
{{col|en|title=signature mark|XO//xo,XOXO//xoxo}}

=====Translations=====
{{trans-see|cross|cross#Noun}}

====Adjective====
{{en-adj|-}}

# {{senseid|en|intersex or non-binary}} {{U|intersex}} or [[non-binary]] {{q|in passports and identification documents}}.
#: {{alti|en|x<id:intersex or non-binary>}}
#: {{cot|en|M|F}}
#* {{RQ:en:New York Times|author=Amy Harmon|title=Which Box Do You Check? Some States Are Offering a Nonbinary Option|url=https://www.nytimes.com/2019/05/29/us/nonbinary-drivers-licenses.html|date=2019-05-29|passage=So last summer, when the Massachusetts State Legislature became one of the first in the nation to consider a bill to add an “'''X'''” option for nonbinary genders to the “M” and “F” on the state driver’s license, El, 17, was less surprised than some at the maneuver that effectively killed it.|archiveurl=https://web.archive.org/web/20190608042105/https://www.nytimes.com/2019/05/29/us/nonbinary-drivers-licenses.html}}

====Verb====
{{en-verb}}

# {{alternative spelling of|en|ex#Verb|t=to [[delete]]; to [[cross out]]}}.
#* {{quote-journal|en|year=1944|author=Henry R. Luce|journal=Fortune|volume=30|page=88
|passage=I '''Xed''' the ballot for our Congressman last election just because he seemed {{...}}}}

===Etymology 3===
{{etymid|en|ecstasy}}
Presumably by abbreviation of the pronunciation of {{m|en|ecstasy}}.

====Noun====
{{en-noun|-}}

# {{lb|en|slang}} [[ecstasy|Ecstasy]], a particular [[street drug]].
#* {{quote-song|en|date=2003-01-07|artist=w:50 Cent|album=Get Rich or Die Tryin'|track=5|title=In da Club|passage=You can find me in the club, bottle full of bub'. Look, mami, I got the '''X''' if you into takin' drugs.}}
#* {{quote-book|en|year=2008|author=Stephen King|title=Graduation Weekend|passage=Tonight the kids will go out and party down in a more righteous mode. Alcohol and not a few tabs of '''X''' will be ingested. Club music will throb through big speakers.}}
#* {{quote-song|en|date=2018-06-08|artist=Mendoza|title=Love Druggie|url=https://genius.com/Mendoza-love-druggie-lyrics|passage=I'm a love druggie falling for these drug junkies. Come n call on me besides these '''X''' parties. It's fucking hard on my body.}}

=====Translations=====
{{trans-top|slang: ecstasy}}
* Finnish: {{t+|fi|E}}, {{t+|fi|eve}}, {{t+|fi|essi}}, {{t+|fi|xtc}}
{{trans-bottom}}

===Etymology 4===
{{etymid|en|adults-only}}

====Adjective====
{{en-adj|-}}

# {{lb|en|British|_|film certificate|dated}} Suitable only for those aged sixteen or (later) eighteen years and over.
# {{lb|en|originally|_|movie rating}} [[obscene|Obscene]]; [[adult]]; [[pornographic]]; [[XXX]].
#* {{quote-journal|en|year=1976|journal=Movie Maker|volume=10|issue=1-6|page=364
|passage=If you go to an '''X''' movie you do so knowingly, as does everyone else in the audience. Or if the same thing comes up on TV you can switch over, or, if you wish, enjoy it in relative privacy.}}

=====Derived terms=====
{{col3|en
|XXX
|XXXX
}}

=====Translations=====
{{trans-top|suitable for those over 16 or 18}}
* Finnish: {{t+|fi|K}}
* Swedish: {{t+|sv|barnförbjuden|lit=forbidden to children}}
{{trans-bottom}}

{{checktrans-top}}
* French: {{t+check|fr|X}}
* Spanish: {{t+check|es|equis}}
{{trans-bottom}}

===Etymology 5===
{{etymid|en|Christ}}
From {{m|en|Christ}} by abbreviation, {{obor|en|grc|Χ|pos=letter [[chi]]|nocap=y}}, from {{m|grc|Χριστός||[[Christ]]}}.

====Proper noun====
{{en-prop}}

# {{lb|en|informal}} [[Christ]]

=====Derived terms=====
{{col3|en
|Xian
|Xianity
|Xmas//X-mas
|Xmastide
|Xt
|Xtian
|Xtianity
|Xtina
|Xtopher
}}

=====Translations=====
{{trans-top|informal: Christ}}
* Finnish: {{t+|fi|Jesse}}
{{trans-bottom}}

===Etymology 6===
{{etymid|en|cross}}
[[File:X-ing.jpg|thumb|Sign reading “Pedestrian X” (Pedestrian Crossing)]]
From {{m|en|cross}}, due to the '''X''' symbol being a [[cross]] [[saltire]].

====Noun====
{{en-noun|es}}

# {{U|cross}}, [[crossing]].
#: {{ux|en|Kennington via [[w:Charing Cross tube station|Charing '''X''']]}}

=====Derived terms=====
{{col3|en|xing|ped xing|X-talk|xdress|xdresser}}

=====Translations=====
{{trans-top|cross, crossing}}
* Finnish: {{t+|fi|risteys}}; {{t+|fi|suojatie}} {{q|pedestrian crossing}}
{{trans-bottom}}

===Etymology 7===
{{etymid|en|extreme}}

====Adjective====
{{en-adj}}

# {{lb|en|informal}} {{abbr of|en|extreme}}.

===Etymology 8===
{{wp|X Window System}}
{{etymid|en|w}}
Named after its predecessor, the {{w|W Window System}}; ''X'' follows ''[[W]]'' in the Latin alphabet.

====Proper noun====
[[File:X11.svg|class=skin-invert-image|thumb|Logo of the X Window System ({{senseno|en|windowsystem}})]]
{{en-prop}}

# {{senseid|en|windowsystem}} {{lb|en|Unix|computing}} The {{w|X Window System}}, a [[windowing]] system for [[bitmap]] displays commonly used in [[Unix-like]] systems.
#: {{syn|en|X11}}

=====Usage notes=====
The windowing system is often referred to as [[X11]], referring to its current major version number since 1987.

{{cln|en|placeholder terms}}
{{C|en|Twitter|Websites}}

==Afar==

===Letter===
{{letter|aa}}

# {{Latn-def|aa|letter|8}}

===See also===
{{list:Latin script letters/aa}}

==Afrikaans==

===Pronunciation===
* {{sense|letter name}} {{IPA|af|/ɛks/}}

===Letter===
{{letter|af}}

# {{Latn-def|af|letter|24}}

====See also====
{{list:Latin script letters/af/simple}}

===Noun===
{{af-noun|X'e|X'ie}}

# [[#English|X]]

==Albanian==

===Pronunciation===
* {{IPA|sq|/d͡z/}}

===Letter===
{{letter|sq}}

# {{Latn-def|sq|letter|32}}

====See also====
{{list:Latin script letters/sq/simple}}
* {{q|Arvanitic}} {{list:Greek script letters/aat}}

==Azerbaijani==

===Pronunciation===
* {{qualifier|phoneme}} {{IPA|az|[χ]}} 
* {{qualifier|letter name}} {{IPA|az|[χeː]|[χɯː]}}

===Letter===
{{letter|az}}

# {{Latn-def|az|letter|12}}

====See also====
{{list:Latin script letters/az}}

==Basque==

===Pronunciation===
{{eu-pr|raw:/ʃ/<q:phoneme>}}

===Letter===
{{letter|eu}}

# {{Latn-def|eu|letter|25|ixa}}

====See also====
{{list:Latin script letters/eu}}

===Further reading===
* {{R:eu:EH}}

==Catalan==

===Pronunciation===
* {{ca-IPA|ics,xéix}}

===Letter===
{{letter|ca}}

# {{Latn-def|ca|letter|24|ics|xeix}}

====Derived terms====
* {{l|ca|raig X||X-ray}}

====See also====
{{list:Latin script letters/ca}}

==Central Franconian==

===Pronunciation===
* {{IPAchar|/ks/}}

===Letter===
{{letter|gmw-cfr}}

# {{Latn-def|gmw-cfr|letter|alphvar=German-based}}
# {{Latn-def|gmw-cfr|letter|alphvar=Dutch-based}}

====Usage notes====
* In the German-based spelling, ''x'' is the [[default]] spelling for {{IPAchar|/ks/}}, but not the most frequent spelling. Following the German cognate or otherwise when there is an intervening [[morpheme]] boundary, the spellings ''chs, cks, ks'' (possibly also ''ggs'') may be used instead.
* In the Dutch-based spelling, {{IPAchar|/ks/}} is usually represented by ''ks''. The letter ''x'' occurs only rarely in loanwords.
* ''X'' is never doubled and preceding vowels are short unless they are themselves doubled (as in English).

==Central Mazahua==

===Pronunciation===
* {{IPA|maz|/ʃ/}}

===Letter===
{{letter|maz}}

# {{Latn-def|maz|letter}}

==Chinese==

===Pronunciation 1===
{{zh-pron
|m=áikesi
|c=ik1 si4
|mn=xm:ek-su
|mn-t=ih4 se8
|w=sh:7eq&5kheq sy,1e kheq sy
|cat=letters
}}

====Letter====
{{letter|zh}}

# {{Latn-def|zh|letter|24|alphabet=the Latin alphabet as used in Chinese}}

===Pronunciation 2===
{{zh-pron
|m=xī
|cat=letters
}}

====Letter====
{{letter|zh}}

# {{Latn-def|zh|letter|24|alphabet=[[w:Pinyin#Letters|Pinyin]]}}

==Dutch==

===Pronunciation===
* {{q|letter name}} {{IPA|nl|/ɪks/}}
* {{audio|nl|Nl-X.ogg}}

===Letter===
{{letter|nl}}

# {{Latn-def|nl|letter|24}}

===See also===
* Previous letter: [[W#Dutch|W]]
* Next letter: [[Y#Dutch|Y]]

==Esperanto==

===Letter===
{{letter|eo}}

# {{lb|eo|replacement}} The letter that represents a diacritic in the [[x-system]], written after the letter in its non-[[diacriticed]] form; it is called {{m|eo|ikso}}.
#: {{m|eo|ambaŭ}} &rarr; {{m|eo|ambaux}}

===Further reading===
* {{R:eo:PIV 2020|ikso}}
* {{R:eo:ReVo|ikso}}

==Estonian==

===Pronunciation===
* {{sense|letter name||{{m|et|iks}}}} {{IPA|et|/iksː/}}

===Letter===
{{letter|et}}

# {{Latn-def|et|letter|31|iks}}

====See also====
{{list:Latin script letters/et/simple}}

==Finnish==

===Etymology===
{{fi-ety-letter}}

===Letter===
{{letter|fi}}

# {{Latn-def|fi|letter|23|äks|eks}}

====Usage notes====
* Used only in loanwords. In more established loanwords, it is replaced with '''ks'''.

====Derived terms====
{{col|fi|title=compounds
|X-bosoni
|X-kromosomi
|X-lentokone
|X-sukupolvi
|X-tehokkuus
}}

====See also====
{{list:Latin script letters/fi}}

==French==
{{wp|fr:}}

===Pronunciation===
* {{fr-IPA|ixe}}
* {{audio|fr|Fr-X-fr-Paris.ogg|a=Paris}}
* {{audio|fr|LL-Q150 (fra)-Lepticed7-X.wav|a=<<France>> (<<Toulouse>>)}}
* {{audio|fr|LL-Q150 (fra)-WikiLucas00-X.wav|a=<<France>> (<<Lyon>>)}}

===Letter===
{{letter|fr}}

# {{Latn-def|fr|letter|24|ixe}}

===Noun===
{{fr-noun|mf|#}}

# [[X-frame]] [[stool]]
#* {{RQ:Hugo Misérables|volume=1|book=3|chapter=1|passage=La duchesse de Duras lisait à trois ou quatre amis, dans son boudoir meublé d’'''X''' en satin bleu ciel {{...}}.|t=The Duchess de Duras was reading to two or three friends, in a boudoir furnished with X-frame stools in sky-blue satin.}}

===Adjective===
{{fr-adj|inv=1}}

# [[X-rated]]

====Derived terms====
* {{l|fr|film X}}

==German==

===Pronunciation===
* {{IPA|de|/ʔɪks/}}
* {{audio|de|De-X.ogg|a=<<Germany>> (<<Berlin>>)}}
* {{rhymes|de|ɪks}}

===Letter===
{{letter|de}}

# {{Latn-def|de|letter|24}}

====See also====
{{list:Latin script letters/de}}

===Noun===
{{de-noun|n,-,-}}

# {{l|en|X}}

====Declension====
{{de-ndecl|n,-,-}}

===Further reading===
* {{R:de:DWDS}}

==Heiltsuk==

===Pronunciation===
* {{IPA|hei|/ç/}}

===Letter===
{{letter|hei}}

# {{Latn-def|hei|letter|18}}

====See also====
{{list:Latin script letters/hei}}

==Hungarian==

===Pronunciation===
* {{q|letter name}} {{hu-IPA|iksz}}
* {{q|phonetic realization}} {{hu-IPA}}

===Letter===
{{letter|hu}}

# {{Latn-def|hu|letter|alphabet=the extended Hungarian [[alphabet]]||iksz}}

====Declension====
{{hu-infl-nom|X-e|e|v=sz}}{{hu-pos-etek|X-||ei}}

===See also===
{{list:Latin script letters/hu}}

==Icelandic==

===Pronunciation===
* {{is-IPA|Ex<qq:letter name>}}

===Letter===
{{letter|is}}

# {{Latn-def|is|letter|27}}

====See also====
{{list:Latin script letters/is}}

==Ido==

===Pronunciation===
* {{IPA|io|/ks/}}

===Letter===
{{letter|io}}

# {{Latn-def|io|letter|24}}

====See also====
{{list:Latin script letters/io}}

==Italian==
{{wp|it:}}

===Pronunciation===
{{it-pr|ìx<pre:{{q|letter name}}>|x<pre:{{q|phonemic realization}}>}}

===Letter===
{{letter|it}}

# the twenty-fourth letter of the [[:w:Latin alphabet|Latin alphabet]], called ''{{l|it|ics}}'' in Italian

====Usage notes====
* The letter '''X''' is not considered part of the Italian alphabet. It is found mainly in loanwords, [[Latinism]]s, and [[Grecism]]s.

===See also===
{{list:Latin script letters/it}}
* {{pedia|Italian alphabet}}

==Kankanaey==

===Etymology===
{{bor+|kne|tl|X}}. Letter pronunciation is influenced by {{der|kne|en|X}}.

===Pronunciation===
{{kne-pr|eks<a:letter name>|x<a:phoneme>}}

===Letter===
{{kne-head|letter}}

# {{Latn-def|kne|letter|26|eks}}

====See also====
{{list:Latin script letters/kne}}

===References===
* {{R:kne:Ortograpiya 2016|page=10-11}}

==Korean==

===Etymology===
From {{der|ko|ja|-}} [[×#Japanese|{{lj|[×](ばつ)}}]].

===Symbol===
{{head|ko|symbol}}

# false.
# {{non-gloss|Used to censor profanities.}}
#: {{ux|ko|[[씨발|씨'''X''']] [[새끼]]|tr=ssi*** saekki|f**king bastard}}

====Antonyms====
* {{l|ko|O}}

====Derived terms====
* {{l|ko|OX}}

{{cln|ko|terms written in foreign scripts}}

==Kwak'wala==

===Pronunciation===
* {{IPA|kwk|/x/}}

===Letter===
{{letter|kwk}}

# {{Latn-def|kwk|letter}}

====See also====
{{list:Latin script letters/kwk}}

==Latin==
{{wp|la:}}

===Etymology===
Borrowed from {{bor|la|grc|Χ|t=chi}}, which represented /ks/ in the dialects of most of the Greek mainland and Euboea.

===Pronunciation===
The sound of X was like that of the Greek {{m|el|Ξ|t=xi}}, that is /ks/, although etymologically it represented not only ''cs'' (as in {{l|la|lūx}}, from luc-s, and {{l|la|dīxī}}, from dic-si), but also ''gs'' (as in {{l|la|lēx}}, from leg-s; {{l|la|rēxī}}, from reg-si); ''hs'' (as in {{l|la|trāxī}}, from trah-si; {{l|la|vexī}}, from veh-si); and ''chs'' (as in the word {{l|la|onyx}}, from onych-s, borrowed from the Greek). The
hardening of a softer final (''g'', ''h'', ''ch'') before ''s'' into the ''с'' sound, which occurs in the last-mentioned cases, is found also in several roots ending in ''v'' and ''u'': {{l|la|nix}} for ''niv-s'', {{l|la|vīxī}} for ''viv-si'', {{l|la|connixī}} for conniv-si, {{l|la|fluxī}} for ''fluv-si'', from {{l|la|fluō}} (root ''fluv-''; compare {{l|la|fluvius}}), {{l|la|struxī}} for ''stru-si''.

Less frequently ''x'' has arisen from the combinations ''ps'' and ''ts'': {{l|la|proximus}} for ''prop-simus'' (from {{l|la|prope}}), {{l|la|nīxus}} for nit-sus (from {{l|la|nītor}}), the latter being used along with the collateral form {{l|la|nīsus}}, as also {{l|la|connīvī}} with {{l|la|connixī}}, and {{l|la|mistus}} (from {{l|la|misceō}}) with {{l|la|mixtus}}.

An exchange of the sounds ''ss'' or ''s'' and ''x'', took place in {{l|la|axis}} for ''assis'' and {{l|la|laxus}} for ''lassus''. In the later language of the vulgar, the guttural sound in ''x'' disappeared, and ''s'' or ''ss'' was often written for it; as ''vis'' for {{l|la|vix}}, ''visit'' for {{l|la|vīxit}}, ''unsit'' for {{l|la|unxit}}, conflississet for {{l|la|conflixisset}}, in late inscriptions; hence regularly in Italian, and frequently in the other Romance tongues, the Latin ''x'' is represented by ''s'' or ''ss''.

By a mere graphic variation, one of the constituent sounds of ''x'' is often expressed in inscriptions (but not the earliest) by an additional ''с'' or ''s''; as SACXO or SAXSO for {{l|la|saxō}}; VCXOR or VXSOR for {{l|la|uxor}}; CONIVNCX or CONIVNXS for {{l|la|conjunx}}; even both sounds are sometimes thus expressed, VICXSIT for {{l|la|vīxit}}.

===Letter===
{{letter|la}}

# {{Latn-def|la|letter|23}}

===Symbol===
{{head|la|numeral symbol}}

# {{ng|A digit [[10]] ({{l|la|decem}}) in the decimal [[w:Roman numerals|Roman numeral]] system. Originally a [[tally]] mark. It is iterated for multiples.}}

====Derived terms====
{{col|la|sort=0
|IX
|XI
|XII
|XX
|XXX
|XXXX
|XL
|LX
|LXX
|LXXX
|LXXXX
|XC
}}

====See also====
* Roman numeral letters: {{l|la|I}}, {{l|la|V}}, {{l|la|L}}, {{l|la|C}}, {{l|la|D}}, {{l|la|M}}.
* Unicode glyphs of Roman numerals: [[Ⅹ]], [[ⅹ]].
* Appendixes: [[Appendix:Roman numerals|Roman numerals]], [[Appendix:Latin cardinal numerals|Latin cardinal numerals]]

===References===
* “X” in Charlton T. Lewis and Charles Short [1907], ''A New Latin Dictionary''.

==Luxembourgish==

===Letter===
{{letter|lb}}

# {{Latn-def|lb|letter|24}}

====See also====
* {{list:Latin script letters/lb}}

===Noun===
{{lb-noun|m|X-en|pl2=X}}

# the letter {{l|en|X}}

===Further reading===
* {{R:lb:LOD}}

==Malay==
{{wp|ms:}}

===Pronunciation===
* {{q|letter name}} {{IPA|ms|[ɛk̚s]}}
* {{q|phonetic realization}} {{IPA|ms|[z]|q1=[[onset]]|[k̚s]|q2=[[coda]]}}

===Letter===
{{letter|ms}}

# {{Latn-def|ms|letter|24|eks}}

====See also====
{{list:Latin script letters/ms}}

==Maltese==

===Letter===
{{letter|mt}}

# {{Latn-def|mt|letter|28}}

===See also===
{{list:Latin script letters/mt}}

==Navajo==

===Letter===
{{letter|nv}}

# {{Latn-def|nv|letter}}

====See also====
{{list:Latin script letters/nv}}

==Norwegian Bokmål==
{{wikipedia|1=X,no:X}}

===Etymology===
The uppercase form of {{m|nb|x}}, ultimately from {{der|nb|la|X}}, through an Etruscan intermediary from the Western Greek form of {{m|grc|Χ|tr=Kh|t=chi}}, which represented {{IPAchar|/ks/}}.

===Pronunciation===
* {{IPA|nb|/ɛks/|/eks/}}
* {{audio|nb|LL-Q9043 (nor)-Jon Harald Søby (WMNO)-x.wav|Audio}}
* {{rhymes|nb|ɛks|s=1}}
* {{homophones|nb|x|ex|eks}}
* {{hyphenation|nb|X}}

===Letter===
{{letter|nb}}

# {{Latn-def|nb|letter|24}}

====Usage notes====
* In Norwegian words, {{m|nb|x}} is normally pronounced {{IPAchar|/s/}} word-initially before a vowel and otherwise chiefly {{IPAchar|/ks/}}.
* The letter occurs mainly in [[loanword]]s and foreign [[proper name]]s. In older inscriptions and texts, it may be used instead of {{m|nb|ks}}.

====See also====
* {{list:Latin script letters/nb}}

===Noun===
{{nb-noun-m1|X-}}

# The uppercase form of {{m|nb|x}}, the twenty-fourth [[letter]] of the Norwegian [[alphabet]], written in the [[Latin script]]; preceded by {{m|nb|w}} and followed by {{m|nb|y}}.
# The uppercase written representation of the sounds {{IPAchar|/s/}} and {{IPAchar|/ks/}}.
# An [[X-shaped]] [[figure]], [[formation]], [[object]], or [[mark]].

===Symbol===
{{head|nb|symbol}}

# A placeholder for an unknown, unspecified, or unidentified [[person]], [[thing]], or [[factor]].
## An unidentified, mysterious, or unspecified person.
##* {{quote-book|nb|author={{w|Knut Hamsun}}|title=Knut Hamsuns brev|volume=I|page=492|passage=et større eller mindre X fra gaden har formaaet at pirke Dem til at svare paa et overfald i en avis|translation=some greater or lesser X from the street has managed to provoke you into responding to an attack in a newspaper}}
##* {{quote-journal|nb|year=1908|author={{w|Sven Elvestad|Kristian F. Biller}}|journal=Lys og Skygge|number=2|page=11|article=Den Dødes Værelse|passage=&#91;si at&#93; du har kjøbt sagerne af et fuldstændig X|translation=&#91;say that&#93; you bought the items from a completely unknown person}}
##* {{quote-book|nb|year=1991|author={{w|Thomas Hylland Eriksen}}|title=Veien til et mer eksotisk Norge|page=71|passage=sett nå at restauratør X i en lang periode har mottatt klager fra visse av sine gjester fordi en bestemt gruppe mennesker har … oppført seg truende på X’s etablissement|translation=suppose that restaurateur X has for a long period received complaints from some of his guests because a particular group of people has … behaved threateningly at X’s establishment}}
##* {{quote-book|nb|year=2009|author={{w|lang=no|Kjetil S. Østli|Kjetil Stensvik Østli}}|title=Politi og røver|page=328|passage=X observert med Y i Audi S8|translation=X observed with Y in an Audi S8}}
## An unknown or unspecified [[place]].
##* {{quote-journal|nb|date=25 October 1982|journal=VG|page=36|passage=en ballongferd er en typisk flyvning fra A til X|translation=a balloon trip is a typical flight from A to X}}
# {{lb|nb|sports}} An abbreviation of {{m|nb|cross|t=cross}}.

===References===
* {{R:nb:OB}}
* {{R:nb:NAOB}}
* [https://snl.no/X_-_bokstav “X – bokstav”] in ''{{w|lang=no|Store norske leksikon}}''.

==Norwegian Nynorsk==

===Letter===
{{letter|nn}}

# {{Latn-def|nn|letter|24}}

====See also====
* {{list:Latin script letters/nn}}

===Noun===
{{nn-noun-m1|X-}}

# the letter {{l|en|X}}

===References===
* {{R:nn:OB}}

==Nuxalk==

===Pronunciation===
* {{sense|phoneme}} {{IPA|blc|/χ/}}

===Letter===
{{letter|blc}}

# {{Latn-def|blc|letter|31}}

====See also====
* {{list:Latin script letters/blc}}

==Oromo==

===Pronunciation===
{{om-IPA|xa}}
{{om-syllables|xa}}
**{{audio|om|Om-x.ogg}}

===Letter===
{{letter|om}}

# {{Latn-def|om|letter|24}}

==Portuguese==

===Pronunciation===
{{q|letter name}}
{{pt-IPA|xis}}
{{q|phonetic realization}} {{IPA|pt|/s/|/z/|/ʃ/|/ks/|/ɡz/}}

===Letter===
{{letter|pt}}

# {{Latn-def|pt|letter|24|xis}}

====See also====
{{list:Latin script letters/pt}}
* {{m|pt|xis}}

==Romani==

===Pronunciation===
* {{IPA|rom|/x/}}

===Letter===
{{letter|rom}}

# {{lb|rom|International Standard}} {{Latn-def|rom|letter|11}}
# {{lb|rom|Pan-Vlax}} {{Latn-def|rom|letter|12}}

====See also====
{{list:Latin script letters/rom}}

===References===
* {{R:NERG|X, x|page=13}}

==Romanian==

===Pronunciation===
* {{q|phonetic realization}} {{IPA|ro|/ks/|/ɡz/}}

===Letter===
{{letter|ro}}

# {{Latn-def|ro|letter|29|ics}}

====See also====
{{list:Latin script letters/ro}}

==Saanich==

===Pronunciation===
* {{q|phonetic realization}} {{IPA|str|/x̠/}}

===Letter===
{{letter|str|type=nocase}}

# {{Latn-def|str|letter|35}}

====See also====
{{list:Latin script letters/str}}

==Somali==

===Pronunciation===
* {{q|letter name}} {{IPA|so|/ħɑ/}}
* {{q|phonetic realization}} {{IPA|so|/ħ/}}

===Letter===
{{letter|so}}

# {{Latn-def|so|letter|5|xa|prec=J|foll=KH}}

====Usage notes====
* The [[Somali]] alphabet follows the [[Arabic]] [[abjad]] order.

====See also====
{{list:Latin script letters/so}}

==Spanish==

===Pronunciation===
{{es-pr|equis}}

===Etymology 1===

====Letter====
{{letter|es}}

# {{Latn-def|es|letter|25}}

=====Derived terms=====
{{col|es
|cada X tiempo
|rayo X
}}

===Etymology 2===
{{ety|es|:bor|en:X|text=+|tree=1}}

====Proper noun====
{{es-prop}}

# {{l|en|X}} {{gl|social network formerly known as [[Twitter]]}}
#* {{quote-journal|es|author=Jordan Valinsky|title=Google Maps cambiará el nombre del golfo de México por el de "golfo de Estados Unidos"|magazine=w:CNN en Español|url=https://cnnespanol.cnn.com/2025/01/28/eeuu/google-maps-golfo-de-mexico-por-el-golfo-de-america-trax|date=2025-01-28|passage=En una publicación en '''X''', Google explicó que tiene una “práctica de larga data de aplicar cambios de nombre cuando se han actualizado en fuentes gubernamentales oficiales”.|archiveurl=https://web.archive.org/web/20250823083426/https://cnnespanol.cnn.com/2025/01/28/eeuu/google-maps-golfo-de-mexico-por-el-golfo-de-america-trax}}

{{C|es|Twitter|Websites}}

==Tagalog==

===Etymology===
{{bor+|tl|es|X}}. Each pronunciation has a different source:
* Filipino alphabet pronunciation is influenced by {{der|tl|en|X}}.
* Abecedario pronunciation is from {{der|tl|es|X}}.

===Pronunciation===
{{tl-pr
|éks<qq:letter name, Filipino alphabet>
|ekis<qq:letter name, Abecedario>
|ks<qq:phoneme>
|h<qq:phoneme, some Spanish loanwords>
}}

===Letter===
{{letter|tl}}

# {{tl-letter def|26|eks|alph=fil}}
# {{lb|tl|historical}} {{tl-letter def|26|equis|ekis|alph=abec}}

====Usage notes====
* This letter is mostly used only in proper nouns, unadapted loanwords, or Spanish-based spellings.

====Related terms====
{{col3|tl|rayos X}}

====See also====
{{list:Latin script letters/tl}}

===Further reading===
* {{R:Pambansang Diksiyonaryo}}

==Tashelhit==

===Pronunciation===
* {{IPA|shi|/χ/}}

===Letter===
{{letter|shi}}

# {{Latn-def|shi|letter}}

===Further reading===
* {{pedia|Berber Latin alphabet}}

==Vietnamese==

===Pronunciation===
{{vi-IPA|ích|ích-xì|xờ|xờ nhẹ}}
* {{audio|vi|LL-Q9199 (vie)-Penn Zero MSSJ-ích xì.wav|a=Hanoi}}

===Letter===
{{letter|vi}}

# {{Latn-def|vi|letter|28|ích|ích xì|xờ|xờ nhẹ}}

====See also====
{{list:Latin script letters/vi}}

==Zulu==

===Letter===
{{letter|zu}}

# {{Latn-def|zu|letter|24}}

====See also====
{{list:Latin script letters/zu}}