Synonyms for Misdeed:

n.

case, attempt, law-breaking, count. illegality, felony. crime (noun)
Peccancy, illegality, misbehavior.
misconduct (noun)
wrongdoing.
misdeed (noun)
misbehaviour, misbehavior.

Other synonyms:

wrongdoing, evildoing, Peccancy, Diablerie. illegality, attempt, felony. deviltry. count. case.