why

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why¹

  • /waɪ̯/
  • [waɪ̯]
  • /waː/ General South African
  • /wa̝ː/ Multicultural London English
  • /ʍaɪ̯/
  • [ʍaɪ̯] ~ [w̥aɪ̯]
  • /ʍae̯/ Scotland
  • [ʍae̯] Scotland
  • /ʍaː/ Southern US
  • [ʍaː] ~ [w̥aː] Southern US

Sounds like wye, Y, y (wine–whine merger) · Rhymes with -aɪ

Where it comes from

From Middle English why, from Old English hwȳ (“why”), from Proto-Germanic *hwī (“by what, how”), from Proto-Indo-European *kʷey, instrumental case of *kʷís (“who”), *kʷid (“what”).

Cognate with Old Saxon hwī (“why”), hwiu (“how; why”), Middle High German wiu (“how, why”), archaic Danish and Norwegian Bokmål hvi (“why”), Norwegian Nynorsk kvi (“why”), Swedish vi (“why”), Faroese and Icelandic hví (“why”), Latin quī (“why”), Doric Greek πεῖ (peî, “where”), Ukrainian чи (čy, “if”), Polish czy, Czech či (“or”), Serbo-Croatian či (“if”). Compare Old English þȳ (“because, since, on that account, therefore, then”, literally “by that, for that”). See thy.

adverb

  1. interrogative, not comparable Introducing a complete question. Why is the sky blue?
  2. interrogative, not comparable With a negative, used rhetorically to make a suggestion. Why don't you ask her out for dinner?
  3. interrogative, not comparable Introducing a verb phrase (bare infinitive clause). Why spend money on something you already get for free?
  4. interrogative, not comparable Introducing a noun or other phrase. Why him? Why not someone taller?
  5. not comparable, relative For which cause, reason, or purpose. That's the reason why I did that.
  6. not comparable The cause, reason, or purpose for which. That is why the sky is blue.

Similar: how come, to what end, what for, why so, for why, wherefore

noun whys · why's · whies

  1. Reason. A good article will cover the who, the what, the when, the where, the why and the how.

Similar: wherefore

interjection

  1. dated, literary An exclamation used to express pleasant or unpleasant mild surprise, indignation, or impatience. Why, that’s ridiculous!

verb whys · whies · whying · whyed · whied

  1. intransitive, transitive To ask (someone) the question "why?". Why indeed? But once you start whying, there's no end to it.

why²

Where it comes from

A variant of quey.

noun whies

  1. Yorkshire, obsolete A young heifer. At two years old, also, the HEIFERS - provincially, “whies,” are generally put to the bull.

why³

noun

  1. alternative Alternative form of wye; the name of the Latin script letter Y/y. ee, why, ee, ess, eyes

Thesaurus

Closest in meaning: wherefore, how come, explaining, explanation, result, rationale, cause, reason, consequence, therefore, because, well, when, thus, grounds, what

noun

Similar: wherefore

Translations

Every language

adv (interrogative) for what reason

Españolpor qué (razón/motivo), a qué son, a son de qué, con qué motivo/razón, en razón de qué, por
한국어왜 wae
日本語何故 naze, なんで nande, どうして dōshite, 何故 naniyue
中文為甚麼 /為什麼 /为什么 wèishénme, 怎麼 /怎么 zěnme, 為何 /为何 wèihé, 幹嗎 /幹嘛 gànmá, 為啥 /为啥 wèishá
हिन्दीक्यों kyõ, क्यूँ kyū̃
Kiswahilikwaje, mbona
Portuguêspor que, por quê
Françaispourquoi
Deutschwarum, wieso, weshalb, weswegen
Italianoperché
Ελληνικάγιατί giatí
Românăde ce, pentru ce
Русскийпочему́ počemú, заче́м začém, отчего́ otčevó
Tiếng Việtsao, vì sao, tại sao
العربيةلِمَاذَا limāḏā, لِمَ lima
עבריתלָמָּה, לָמָה láma, מַדּוּעַ madúa’

adv (relative), (fused relative)

Españolpor que, por lo que, por la que

noun the reason

Españolporqué
日本語何故 naze, どうして dōshite
Portuguêsporquê
Françaispourquoi
Deutschwarum
Italianoperché
Ελληνικάγιατί giatí
Românăpentru ce
Русскийпричи́на pričína
Tiếng Việtlí do, lí do tại sao
עבריתלמה láma, מדוע madu‘a

intj exclamation of surprise

Españolvaya
Portuguêsuai
Françaisha, oh, ah, eh bien, bah, pardi
Deutschnanu, na
Русскийого́ ogó, о o, как kak

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Cite this
MLA

"why." Wiktionary, via Micwyn, micwyn.com/word/why. Accessed 6 Nov. 2026.

APA

why. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/why

Chicago

"why." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/why.

BibTeX
@misc{why_2026,
  title = {why},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/why},
  urldate = {2026-11-06}
}