MALFEASANCE

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.]