- Definitions|2
- Thesaurus|1.2k
- Abbreviations|0
76 entries under adjective topic. ×
| sure(clear, complete, certain, reliable) | |
| reliable(clear, certain, certainty, flawless) | |
| unfailing(certain, flawless, reliable, trustworthy) | |
| certain(certain, reliable, valid, dependable) | |
| trustworthy(certainty, dependable, unfailing, unerring) | |
| unerring(clear, certain, precise, sure) | |
| dependable(certain, flawless, reliable, trustworthy) | |
| perfect(flawless, faultless, dependable, unerring) | |
| foolproof(dependable, unerring) | |
| inerrant(complete, certain, sure, valid) | |
| secure(verb, certain) | |
| correct(perfect, precise, flawless, faultless) | |
| exact(perfect, precise, flawless, faultless) | |
| faultless(perfect, flawless, dependable, unerring) | |
| flawless(perfect, faultless, dependable, unerring) | |
| absolute | |
| accurate(perfect, certain, precise, flawless) | |
| effective(dependable, unerring) | |
| impeccable(flawless, dependable, unerring) | |
| inerrable(dependable, unerring) |
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| APA | Smart Define. (2015). infallible thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/infallible/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "infallible thesaurus" https://smartdefine.org/infallible/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, infallible thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/infallible/thesaurus/synonyms>. |
| MLA | Smart Define. "infallible thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/infallible/thesaurus/synonyms> |