knavish Synonyms

cunning foxy tricky guileful tricksy wily dodgy sly slick crafty treacherous shifty shameful shady truthless unprincipled unethical leprechaunish dishonourable scoundrelly impish untrustworthy wicked villainous untruthful unscrupulous scampish roguish reprobate dishonest disgraceful dirty deceitful dastardly arch crooked criminal corrupt disreputable evil false rascally puckish perfidious mischievous mendacious lying immoral fraudulent foul