rascally Synonyms

scoundrelly blackguardly devilish roguish pixieish sly shady scampish rascal puckish prankish playful perfidious naughty sportive treacherous leprechaunish amoral impish untrustworthy wicked villainous vile unscrupulous unprincipled troublesome miscreant mischievous devious designing deceitful cunning criminal crafty corrupt bastardly base bad dirty dishonest disreputable misbehaving mean knavish immoral hollow-hearted frolicsome false-hearted false errable