dishonestly

maliciously

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

honestly truthfully

deceitfully disloyally perfidiously unfaithfully unscrupulously

faithfully harmlessly honestly loyally safely

illegally unreasonably

below the belt immorally uncleanly

clean cleanly fairly honestly justly reasonably

cruelly perfidiously ruthlessly unconscionably unethically viciously