- Definitions|2
- Thesaurus|4.6k
- Abbreviations|0
106 entries under valid topic. ×
| sure(adjective, good, set, clear, understanding) | |
| positive(adjective, good, set, clear, strong) | |
| definite(adjective, good, clear, strong, complete) | |
| absolute(adjective, clear, strong, complete, correct) | |
| unequivocal(adjective, definite, absolute, positive, ideal) | |
| undeniable(adjective, certain, true, definite, absolute) | |
| incontrovertible(adjective, certain, true, ideal) | |
| indubitable(adjective, clear, certain, true, real) | |
| clear(adjective, complete, flat, firm, total) | |
| determined(adjective, good, strong, easy, firm) | |
| dependable(adjective, good, clear, strong, sound) | |
| fixed(adjective, change, clear, complete, firm) | |
| irrefutable(adjective, certain, true, definite, sure) | |
| reliable(adjective, clear, strong, sound, easy) | |
| unambiguous(adjective, clear, firm, plain, perfect) | |
| firm(noun, adjective, good, change, clear) | |
| infallible(adjective, reliable, trustworthy, dependable) | |
| destined(adjective, clear, hard, sound, plain) | |
| true(adjective, good, strong, correct, firm) | |
| conclusive(adjective, clear, strong, correct, easy) |
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| APA | Smart Define. (2016). certain thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/certain/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "certain thesaurus" https://smartdefine.org/certain/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, certain thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/certain/thesaurus/synonyms>. |
| MLA | Smart Define. "certain thesaurus" 31 March 2016. Web. 20 September 2026. <https://smartdefine.org/certain/thesaurus/synonyms> |