255 entries under adjective topic. ×

8
unreal(fake, counterfeit, fantastic, sham)
8
untrue(fake, counterfeit, dishonest, sham)
8
untrustworthy(false, dishonest, cunning, deceitful)
8
untruthful(fake, false, counterfeit, dishonest)
7
bogus(fake, counterfeit, sham, phony)
7
canting(smooth, offensive, coarse, excessive)
7
factitious(fake, unusual, strange, counterfeit)
7
faithless(dishonest, lying, misleading, hypocritical)
7
oily(smooth, offensive, coarse, excessive)
7
spurious(fake, false, counterfeit, dishonest)
7
wily(false, dishonest, cunning, deceitful)
6
cunning(false, dishonest, deceitful, lying)
6
dishonorable
6
double(dishonest, deceitful, lying, hypocritical)
6
evasive(dishonest, deceitful, shrewd, crafty)
6
imitative(fake, artificial)
6
phoney orphony
6
scheming
6
slimy(smooth, offensive, coarse, excessive)
6
underhanded(false, dishonest, cunning, deceitful)
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APASmart Define. (2016). insincere thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/insincere/thesaurus/synonyms
ChicagoSmart Define. 2016. "insincere thesaurus" https://smartdefine.org/insincere/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, insincere thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/insincere/thesaurus/synonyms>.
MLASmart Define. "insincere thesaurus" 14 March 2016. Web. 30 September 2026. <https://smartdefine.org/insincere/thesaurus/synonyms>