why not

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why not

adverb

  1. not comparable Why is that so? (for a negative statement) I don't want to go out today. — Why not?

    Similar: why?, how come?

  2. not comparable Used to state that one has no objection to and approves of a proposal. Let's have pizza for lunch. — Yeah, why not?

    Similar: all right, OK

  3. not comparable Used to introduce a proposal. Why not try turning the handle in the other direction to see if that opens the window?

    Similar: how about, what if

Translations

Every language

adv why is that not true

Españolpor qué no
日本語当たり前でしょ atarimaedesho
中文何不 hébù, 為什麼不呢 /为什么不呢 wèishéme bù ne, 為什麼 /为什么 wèishénme
Portuguêspor que não
Françaispourquoi pas
Deutschwarum nicht
Italianoperché no
Русскийа почему́ a počemú, а что́ так a štó tak

adv state one has no objection

Españolpor qué no
日本語もちろん mochiron
中文好的 hǎo de
Portuguêspor que não
Françaispourquoi pas
Deutschwarum nicht, wieso nicht
Italianoperché no
Русскийпочему́ бы и нет počemú by i net
العربيةلِمَ لَا lima lā
עבריתלָמָּה לֹא láma ló

adv introduce a proposal

Españolpor qué no
中文要不 yàobù
Portuguêspor que não
Françaispourquoi ne pas
Русскийпочему́ бы не počemú by ne

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Cite this
MLA

"why not." Wiktionary, via Micwyn, micwyn.com/word/why%20not. Accessed 6 Nov. 2026.

APA

why not. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/why%20not

Chicago

"why not." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/why%20not.

BibTeX
@misc{why_not_2026,
  title = {why not},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/why%20not},
  urldate = {2026-11-06}
}