Adverbs for Ferocious

inhumanly; malevolently; coldly; unnaturally; unbelievably; stonily; barbarously; heinously; utterly; uncommonly; unutterably; savagely; inexpressibly; cruelly; diabolically; unspeakably; atrociously; brutally; pretentiously; comically; dutifully; unduly; mercilessly; ruthlessly.