Malum

I. Evil; wickedness; an evil; an offense or wrong; Malum in se: a wrong in itself; an act involving illegality from the very nature of the transaction, upon principles of natural, moral and public law. Malum non praesumiter: wickedness is not presumed. Malum prohibitum: a wrong prohibited; an act prohibited as wrongful; an act involving an illegality resulting from positive law.

In old English law

A misfortune; an infirmity; a sudden indisposition, by which a party was prevented from appearing in court when summoned. Malum lecti: misfortune or sickness of bed; an infirmity or indisposition by which a person was confined to his bed. Malum TCniendi: misfortune or sickness of [in] coming; sickness or accident liappening to a party on his way to court