The Collaborative International Dictionary of English v.0.48:
Ruffianly \Ruf"fian*ly\, a. Like a ruffian; bold in crimes; characteristic of a ruffian; violent; brutal. [1913 Webster]WordNet (r) 3.0 (2006):
ruffianly adj 1: violent and lawless; "the more ruffianly element"; "tough street gangs" [syn: ruffianly, tough]