mightn't

contraction

: might not

Word History

First Known Use

1781, in the meaning defined above

Time Traveler
The first known use of mightn't was in 1781

Dictionary Entries Near mightn't

Cite this Entry

“Mightn't.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mightn%27t. Accessed 1 Dec. 2022.

Kids Definition

mightn't

: might not
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