13 entries under open topic. ×

7
untruthful(adjective, false, dishonest)
6
dishonest(adjective, good, honest, false)
5
deceitful(adjective, honest, false, dishonest)
5
false(adjective, sound, right, dishonest)
4
deceptive(adjective, dishonest, reliable)
3
devious(adjective, fair, false, dishonest)
3
fraudulent(adjective, genuine)
2
insincere(adjective, false, dishonest, sincere)
2
untrustworthy(adjective, honest, false, dishonest)
0
cloak and dagger(expression, idiom)
0
dirty dealing
0
hole-and-corner
0
sub-rosa
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>