would'nt've

A contraction of would-not-have.

I would'nt've drank that milk had I known it was soy milk.

by hedfones March 08, 2008

shouldn'tve

A contraction of "should not have." It can be punctuated many different ways (ie. should'nt've, should'ntve, shouldn't've, etc)

You shouldn'tve called in sick yesterday, there were free donuts in the break room.

by hedfones October 14, 2008