1590s, from It. bandito (pl. banditi) "outlaw," pp. of bandire "proscribe, banish," from V.L. *bannire "to proclaim, proscribe," from P.Gmc. *bann (see
ban). *Bannire (or its Frankish cognate *bannjan) in O.Fr. became banir-, which, with lengthened stem, became English
banish.