29 entries under clear topic. ×
| irrefutable(adjective, hard, sound, firm) | |
| known(fixed, positive, valid, settled) | |
| real(certain, valid, unquestionable, undisputable) | |
| undeniable(simple, plain, certain, straightforward) | |
| undoubted(adjective, hard, sound, firm) | |
| unequivocal(certain, valid, unquestionable, undisputable) | |
| unerring(certain, flawless, valid, unquestionable) | |
| unquestionable(adjective, sound, plain, solid) | |
| valid(certain, unquestionable, approved, confirmed) |
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| APA | Smart Define. (2015). guaranteed thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/guaranteed/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "guaranteed thesaurus" https://smartdefine.org/guaranteed/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, guaranteed thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/guaranteed/thesaurus/synonyms>. |
| MLA | Smart Define. "guaranteed thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/guaranteed/thesaurus/synonyms> |