The Collaborative International Dictionary of English v.0.48:
Misdeed \Mis*deed"\, n. [AS. misd[=ae]d. See Deed, n.] An evil deed; a wicked action. [1913 Webster] Evils which our own misdeeds have wrought. --Milton. [1913 Webster] Syn: Misconduct; misdemeanor; fault; offense; trespass; transgression; crime. [1913 Webster]WordNet (r) 3.0 (2006):
misdeed n 1: improper or wicked or immoral behavior [syn: misbehavior, misbehaviour, misdeed]