dishonestly

STRONGEST

maliciously

WEAK

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

WEAK

honestly truthfully

WEAK

deceitfully disloyally perfidiously unfaithfully unscrupulously

WEAK

faithfully harmlessly honestly loyally safely

STRONGEST

illegally unreasonably

WEAK

below the belt immorally uncleanly

WEAK

clean cleanly fairly honestly justly reasonably

WEAK

cruelly perfidiously ruthlessly unconscionably unethically viciously