2
immoral(adjective, good, moral)
2
insidious
2
insincere(adjective, open, false, dishonest, sincere)
2
sly
2
treacherous
2
tricky(adjective, false, dishonest)
2
unreliable(adjective, clear, strong, false, dishonest)
2
untrustworthy(adjective, open, honest, false, dishonest)
1
artful
1
bogus
1
cheating
1
colored
1
corrupt(adjective, good, dishonest, moral)
1
counterfeit(honest, genuine)
1
crafty
1
cunning
1
delusive(adjective, deceptive)
1
designing
1
double-dealing
1
duplicitous
10 years ago|2.4k views|share |citing 
APASmart Define. (2015). truthful thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/truthful/thesaurus/antonyms
ChicagoSmart Define. 2015. "truthful thesaurus" https://smartdefine.org/truthful/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, truthful thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/truthful/thesaurus/antonyms>.
MLASmart Define. "truthful thesaurus" 24 October 2015. Web. 24 September 2026. <https://smartdefine.org/truthful/thesaurus/antonyms>