Synonyms of deceitful

1 Syllable

slyer, sliest, sly, slick, slier, slyest, wily

2 Syllables

falser, impious, roguish, cunning, floater, devious, blue-sky, faithless, false, sneakier, untrue, tricky, truthless, foxy, unloyal, foxier, sneaking, yellow, stealthy, wilier, spurious, shifty, crafty, sneaky, falsest, witted, knavish, subtle, lying, rascal, craftier, artful, sneakiest

3 Syllables

retiary, fallacious, indirect, insidious, phoniness, phantasmal, beguiling, counterfeit, furtive, dishonest, misleading, uncandid, blackguardly, opprobious, yellowest, designing, underhand, astucious, impostrous, moonlighting, astute, treacherous, yellower, perjurious, complicit, perfidious, phantasmic, fraudulent, mendacious, two-faced, guileful, untruthful, foresworn, feline, scoundrelly, cooked-up, unfaithful, deceiving

4 Syllables

untrustworthy, delusive, illusory, illusive, underhanded, unreliable, elusive, unscrupulous, falsehearted, deceptive, sophistical, clandestine, unprincipled, insincere, unauthentic, elusory, double-dealing, ambidextrous, duplicitous, machiavellian, barmecidal, mythomaniac, disingenuous, casuistical, delusory, unconverted, unconscientious

5 Syllables

phantasmagoric, dishonorable, adulterine, hypocritical, exploitative

6 Syllables

hallucinatory

7 Syllables

misrepresentative