3
stilted(adjective, counterfeit, affected, hollow, pretentious)
3
sycophantic
3
theatrical(counterfeit, affected, hollow, pretentious, shallow)
3
unfair(adjective, false, dishonest, deceitful, lying)
3
unreliable(adjective, smooth, false, dishonest, deceitful)
3
vulpine
2
Machiavellian
2
Tartuffian
2
adulatory(smooth, offensive, coarse, excessive, flattering)
2
casuistic(adjective, fake, counterfeit, sham, phony)
2
cheating(adjective, false, dishonest, cunning, deceitful)
2
disloyal
2
equivocating(adjective, dishonest, deceitful, untruthful, two-faced)
2
exaggerated(pretentious, la-di-da)
2
fabricated(adjective, fake, unusual, strange, counterfeit)
2
faux(fake, artificial)
2
fibbing(adjective, dishonest, deceitful, untruthful, two-faced)
2
fickle
2
formalistic
2
glib(adjective, smooth, offensive, coarse, lying)
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APASmart Define. (2016). insincere thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/insincere/thesaurus/synonyms
ChicagoSmart Define. 2016. "insincere thesaurus" https://smartdefine.org/insincere/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, insincere thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/insincere/thesaurus/synonyms>.
MLASmart Define. "insincere thesaurus" 14 March 2016. Web. 29 September 2026. <https://smartdefine.org/insincere/thesaurus/synonyms>