255 entries under adjective topic. ×

4
mannered(affected, pretentious, upper-class, put-on)
4
phoney
4
pietistic
4
prevaricating(dishonest, deceitful, untruthful, two-faced)
4
pseudo(fake, unusual, strange, counterfeit)
4
self-righteous
4
strained(affected, unnatural)
4
synthetic(fake, unusual, strange, counterfeit)
4
underhand(false, dishonest, cunning, deceitful)
4
unfaithful(dishonest, hypocritical, two-faced, pretended)
4
unscrupulous(false, dishonest, deceitful, lying)
3
Janus-faced
3
assumed(fake, unusual, counterfeit, sham)
3
backhanded(dishonest, hypocritical, two-faced, pretended)
3
calculating
3
corrupt(false, dishonest, deceitful, lying)
3
deceiving(fake, false, counterfeit, dishonest)
3
ersatz(fake, unusual, strange, counterfeit)
3
fallacious(fake, false, counterfeit, dishonest)
3
guileful(false, dishonest, cunning, deceitful)
10 years ago|19k views|share |citing 
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>