Dishonest

false deceitful mendacious misleading deceptive tricky fraudulent crafty cunning guileful untruthful unscrupulous underhanded crooked shady slippery sneaky untrustworthy two-faced wily corrupt treacherous deceiving cheating unfair double-dealing sinister villainous perfidious designing shifty bent hoodwinking double-crossing bluffing swindling backbiting two-timing unprincipled recreant disreputable elusive unctuous traitorous sneaking