D defs.my
Entry 1 sense Webster, 1913

Malfeasance

/mălˌ-fēz'-əns/ · Mal·fea·sance · IPA /ˌmælˈfiːzəns/
01 n. The doing of an act which a person ought not to do; evil conduct; an illegal deed.
  1. 1.
    The doing of an act which a person ought not to do; evil conduct; an illegal deed.(Law)