9
sneaky(adjective, honest, dishonest, deceitful, untrustworthy)
9
wily(adjective, dishonest, cunning, deceitful, dubious)
8
Janus-faced
8
disingenuous(adjective, honest, false, dishonest, cunning)
8
insidious(adjective, dishonest, deceitful, dubious, tricky)
8
underhand(adjective, honest, dishonest, deceitful, untrustworthy)
8
underhanded(adjective, mean, honest, base, false)
7
deceptive(adjective, false, dishonest, deceitful, slick)
7
foxy
7
lying(adjective, false, dishonest, deceitful, untrustworthy)
7
perfidious(noun, adjective, mean, bad, base)
7
slippery(adjective, uncertain, dishonest, cunning, deceitful)
7
untrustworthy(adjective, mean, bad, base, false)
6
double-faced(adjective, deceitful)
6
faithless(noun, adjective, mean, base, false)
6
indirect(adjective, honest, dishonest, cunning, deceitful)
6
mendacious(adjective, false, dishonest, deceitful, dubious)
5
slick(adjective, false, dishonest, deceitful, dubious)
4
calculating
4
designing
11 years ago|5.5k views|share |citing 
APASmart Define. (2015). duplicitous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/duplicitous/thesaurus/synonyms
ChicagoSmart Define. 2015. "duplicitous thesaurus" https://smartdefine.org/duplicitous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, duplicitous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/duplicitous/thesaurus/synonyms>.
MLASmart Define. "duplicitous thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/duplicitous/thesaurus/synonyms>