MISFEASANCE
misfeasance
(noun) doing a proper act in a wrongful or injurious manner
Source: WordNet® 3.1
Etymology
Noun
misfeasance (countable and uncountable, plural misfeasances)
(legal) An actual or alleged wrong that arises from an action; often, the wrongful use of legal authority.
Source: Wiktionary
Mis*fea"sance, n. Etym: [OF. pref. mes- wrong (L. minus less) +
faisance doing, fr. faire to do, L. facere. Cf. Malfeasance.] (Law)
Definition: A trespass; a wrong done; the improper doing of an act which a
person might lawfully do. Bouvier. Wharton.
Source: Webster’s Unabridged Dictionary 1913 Edition