- Definitions|2
- Thesaurus|3k
- Abbreviations|0
| hypocritical(adjective, deceitful, pretending) | |
| dishonest(adjective, false, insincere) | |
| insincere(adjective, open, false, dishonest, pretended) | |
| cunning | |
| devious(adjective, open, fair, false, insincere) | |
| fake | |
| sly | |
| shameful | |
| tricky(adjective, false, insincere) | |
| insidious(adjective, tricky, sneaky) | |
| ambidextrous | |
| crafty | |
| cute(adjective, direct, obvious, frank) | |
| deceptive(adjective, open, reliable) | |
| fulsome(adjective, sickening) | |
| phony(adjective, fake, false, genuine) | |
| scheming | |
| untrustworthy(adjective, false, insincere) | |
| affected(verb, true, natural) | |
| foxy |
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| APA | Smart Define. (2016). sincere thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sincere/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "sincere thesaurus" https://smartdefine.org/sincere/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, sincere thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sincere/thesaurus/antonyms>. |
| MLA | Smart Define. "sincere thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/sincere/thesaurus/antonyms> |