- Definitions|2
- Thesaurus|4.6k
- Abbreviations|0
95 entries under unquestionable topic. ×
| sound(noun, adjective, clear, strong, easy) | |
| steady(adjective, good, strong, complete, easy) | |
| bound(adjective, definite, fixed, guaranteed) | |
| predetermined(adjective, determined, near, usual, regular) | |
| unqualified(adjective, clear, complete, flat, firm) | |
| ineluctable(adjective, near, obvious, expected, predictable) | |
| necessary(adjective, regular, definite, obvious, expected) | |
| steadfast(adjective, good, strong, complete, easy) | |
| accurate(adjective, set, clear, complete, correct) | |
| doubtless(adjective, adverb, clear, definite, sure) | |
| exact(adjective, clear, correct, honest, plain) | |
| perfect(adjective, clear, complete, correct, total) | |
| unchanging(adjective, set, clear, firm, solid) | |
| apodictic(set, indisputable, unassailable, ironclad) | |
| confirmable(adjective, clear, hard, sound, plain) | |
| known(adjective, clear, understanding, keen, firm) | |
| sure-fire(adjective, informal, definite, sure, expected) | |
| surefire(sure, reliable, trustworthy, assured) | |
| unchangeable(adjective, clear, firm, solid, determined) | |
| unfaltering(adjective, set, clear, complete, firm) |
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| APA | Smart Define. (2016). certain thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/certain/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "certain thesaurus" https://smartdefine.org/certain/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, certain thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/certain/thesaurus/synonyms>. |
| MLA | Smart Define. "certain thesaurus" 31 March 2016. Web. 22 September 2026. <https://smartdefine.org/certain/thesaurus/synonyms> |