D defs.my
Entry 1 sense Webster, 1913

Misbehave

/mĭsˌ-bəh-āv'/ · Mis·be·have · IPA /mˌɪsbəhˈeɪv/
01 v. t. & i. To behave ill; to conduct one's self improperly; -- often used with a reciprocal pronoun.
imp. & p. p. Misbehaved; p. pr. & vb. n. Misbehaving
  1. 1.
    To behave ill; to conduct one's self improperly; -- often used with a reciprocal pronoun.