Word Study
ferociously
THESAURUS
ferociously
atrociously, barbarously, bec et ongles, bestially, brutally, brutishly, cruelly, devilishly, diabolically, ferally, fiendishly, fiercely, inhumanely, inhumanly, mercilessly, pitilessly, ruthlessly, savagely, sharkishly, slaveringly, tooth and nail, truculently, unhumanly, viciously, wolfishlyFor further exploring for "ferociously" in Webster Dictionary Online