Mal*fea"sance (?), n. [F.
malfaisance, fr. malfaisant injurious, doing ill;
mal ill, evil + faisant doing, p. pr. of faire
to do. See Malice, Feasible, and cf.
Maleficence.] (Law) The doing of an act which a
person ought not to do; evil conduct; an illegal deed. [Written
also malefeasance.]