1
secret(dishonest, cunning, deceitful, sneaky, underhanded)
1
secretive(dishonest, cunning, deceitful, sly, devious)
1
serpentine(ambiguous, rambling, incidental, circuitous, tortuous)
1
sinister(ambiguous, rambling, incidental, circuitous, tortuous)
1
sinuous(ambiguous, rambling, incidental, circuitous, tortuous)
1
snaking(ambiguous, rambling, incidental, circuitous, tortuous)
1
snide(false, dishonest, deceitful, slick, sly)
1
spurious(fake, dishonest, deceitful, untrue)
1
stealthy(dishonest, cunning, deceitful, sly, devious)
1
sub-rosa(dishonest, cunning, deceitful, fickle, untrustworthy)
1
subsidiary(ambiguous, rambling, incidental, circuitous, tortuous)
1
surreptitious(dishonest, cunning, deceitful, tricky, sly)
1
suspicious
1
treasonable(adjective, mean, bad, base, false)
1
twisting(ambiguous, rambling, incidental, circuitous, tortuous)
1
two-timing(dishonest, cunning, deceitful, lying, fickle)
1
two faced
1
unctuous
1
undependable
1
unethical(dishonest, cunning, deceitful, fickle, untrustworthy)
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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>