mayn't

Rarely used contraction of the phrase "may not".

Student: Teacher, may I go to the bathroom.
Teacher: No, you mayn't. You should've went before the class started.

by some punk kid May 02, 2005

Mayn't

Negative form of may+not

I mayn't go out with yo.

by OuBiGiFrediCruga. April 25, 2019

Mayn't

A word used as a replacement to ( May not )

That mayn't be true

by SunlightBlade November 22, 2020

Mayn't

A mix of the may and not.

" May we come in?"
"... No..No you "mayn't"
Featured in the show Sam and Cat.

by I ADORE DUCKS August 26, 2020

Mayn't

May Not (contraction form) (previously undiscovered)

You mayn't use my wallet to pay for that crap.

by Danny Durden June 29, 2023