feralEnglishOxford American Thesaurusferal adjective 1 a pack of feral dogs: wild, untamed, undomesticated, untrained, unused to humans; unbroken, not broken in; British not house-trained; North American not housebroken. ▷antonyms tame; pet. 2 he gave a feral snarl: fierce, ferocious, vicious, savage, aggressive, tigerish, wolfish, predatory, menacing, threatening, bloodthirsty.