Word.ws English Dictionary

mightn't

UK/ˈmaɪtn̩t/

mightn't verb: might not (negative auxiliary).

Verb

mightn't

  1. (UK, archaic) might not (negative auxiliary)
    • Her driver was new to the country; he mightn't be prepared for the leaping of the yellow water down dry arroyos, swift as the pouncings of a cat, or the snake-like slidings of tons of loosened rock and clay from the steep potreros […]1931, Mary Hunter Austin, Starry Adventure, page 274
    • “But, mightn’t there have been something unusual about the Stimatis contract itself?” [Perry Mason cross-examining Roger Correll.]1963, Perry Mason, The Case of the Greek Goddess (Television Season 6, Episode 25)

Origin of mightn't

From might + n't.

Questions about mightn't

What does mightn't mean?
Mightn't means might not (negative auxiliary).
What part of speech is mightn't?
Mightn't is a verb.
How do you pronounce mightn't?
Mightn't is pronounced /ˈmaɪtn̩t/ (UK).

Words near mightn't in the dictionary

  1. mightiness
  2. mightinesses
  3. mightless
  4. mightlessness
  5. mightly
  6. mightn't
  7. mightn't've
  8. mightna
  9. mightnae
  10. mights
  11. mightsome

Source and license

Adapted from Wiktionary: mightn't (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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