unrelentingly

ferociously fiercely mercilessly relentlessly ruthlessly savagely viciously

atrociously barbarically barbarously brutishly callously demoniacally diabolically ferally hardheartedly heartlessly in cold blood inexorably inhumanely inhumanly meanly murderously pitilessly remorselessly something fierce something terrible unkindly

gently humanely kindly nicely

mulishly obdurately

bullheadedly contumaciously determinedly doggedly firmly fixedly headstrongly indomitably inflexibly intractably opinionatedly persistently pertinaciously pigheadedly recalcitrantly resistantly resolutely resolvedly staunchly steadfastly stolidly tenaciously unamenably unflinchingly unimpressibly unreasonably unreasoningly unwaveringly unyieldingly willfully

docilely graciously obediently