malevolently

maliciously

basely behind one's back crookedly dishonestly dishonorably disloyally faithlessly falseheartedly perfidiously roguishly traitorously treacherously underhandedly unfaithfully unscrupulously

honestly truthfully

angrily boldly brutally ferociously forcefully frantically furiously madly mightily passionately savagely severely vehemently viciously wildly

awfully forcibly frenziedly frighteningly hard horribly impetuously in a frenzy irresistibly like cats and dogs maleficiently malignly monstrous no holds barred riotously roughly stormily tempestuously terribly threateningly tigerishly tooth and nail turbulently uncontrollably venomously with bared teeth

calmly gently

kindly mildly quietly tamely