1) Ambidextrous 2) Artful 3) Crafty 4) Dishonest 5) Disloyal 6) Doublehanded 7) Double-tongued 8) Duplicitous 9) Fake 10) False 11) Fraudulent 12) Insincere 13) Lying 14) Scheming 15) Sly 16) Sneaky 17) Suspicious 18) Two faced 19) Unreliable 1) Conniving 2) Crafty 3) Cunning 4) Designing 5) Dishonest 6) Dishonorable 7) Double-dealing 8) Fallacious 9) False 10) Fraudulent 11) Insincere 12) Intended to deceive 13) Machiavellian 14) Mendacious 15) Misleading 16) Scheming 17) Sneaky 18) Tricky 19) Two-faced 20) Underhand 21) Untruthful 22) Wily 
• (a.) Full of, or characterized by, deceit; serving to mislead or insnare; trickish; fraudulent; cheating; insincere.
De·ceit'ful adjective Full of, or characterized by, deceit; serving to mislead or insnare; trickish; fraudulent; cheating; insincere. « Harboring foul deceitful thoughts.» Shak. 
[adj] - intended to deceive
fraudulent adjective intended to deceive; `deceitful advertising`; `fallacious testimony`; `smooth, shining, and deceitful as thin ice` - S.T.Coleridge; `a fraudulent scheme to escape paying taxes`
given to deceiving: A deceitful person cannot keep friends for long. · intended to deceive; misleading; fraudulent: a deceitful action.
marked by deliberate deceptiveness