Misbehave
Pronunciation : Mis`be*have"
Part of Speech : v.
Definition : Defn: To behave ill; to conduct one's self improperly; -- often used with a reciprocal pronoun.
t. & i. [imp. & p. p. Misbehaved; p. pr. & vb. n. Misbehaving.]
Source : Webster's Unabridged Dictionary, 1913