VICIOUS

adjective Etymology: Middle English, from Anglo-French vicios, from Latin vitiosus full of faults, corrupt, from vitium vice Date: 14th century having the nature or quality of vice or immorality ; depraved , defective , faulty , impure , noxious , 4. dangerously aggressive ; savage , marked by violence or ferocity ; fierce , malicious , spiteful , worsened by internal causes that reciprocally augment each other , ~ly adverb ~ness noun Synonyms: see: ~