Definitions for: Misdemean

[v] behave badly; "The children misbehaved all morning"

Webster (1913) Definition: Mis`de*mean", v. t.
To behave ill; -- with a reflexive pronoun; as, to misdemean
one's self.

Synonyms: misbehave, misconduct

Antonyms: behave, comport

See Also: act, act up, carry on, move