;addicted to or characterized by vice; grossly immoral; depraved; profligate: a vicious life.

;given or readily disposed to evil: a vicious criminal.

;reprehensible; blameworthy; wrong: a vicious deception.

;spiteful; malicious: vicious gossip; a vicious attack.

;unpleasantly severe: a vicious headache.

;characterized or marred by faults or defects; faulty; unsound: vicious reasoning.

;savage; ferocious: They all feared his vicious temper.

;(of an animal) having bad habits or a cruel or fierce disposition: a vicious bull.

;Archaic. morbid, foul, or noxious.