- Definitions|2
- Thesaurus|1.2k
- Abbreviations|0
18 entries under clear topic. ×
| sure(adjective, complete, certain, reliable) | |
| reliable(adjective, certain, certainty, flawless) | |
| unerring(adjective, certain, precise, sure) | |
| positive(adjective, certain, valid, dependable) | |
| safe(adjective, flawless, valid, undoubtable) | |
| incontrovertible(adjective, certain, valid, dependable) | |
| definite(adjective, certain, valid, unquestionable) | |
| firm(noun, certain, valid, unquestionable) | |
| guaranteed(adjective, certain, flawless, valid) | |
| conclusive(certain, valid, unquestionable, undisputable) | |
| fixed(certain, valid, unquestionable, undisputable) | |
| genuine(complete, certain, sure, valid) | |
| indubitable(complete, certain, sure, valid) | |
| real(complete, certain, sure, valid) | |
| set(certain, valid, unquestionable, undisputable) | |
| undeniable(certain, valid, unquestionable, undisputable) | |
| unequivocal(certain, valid, unquestionable, undisputable) | |
| valid(complete, certain, sure, unquestionable) |
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| APA | Smart Define. (2015). infallible thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/infallible/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "infallible thesaurus" https://smartdefine.org/infallible/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, infallible thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/infallible/thesaurus/synonyms>. |
| MLA | Smart Define. "infallible thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/infallible/thesaurus/synonyms> |