- Definitions|2
- Thesaurus|4.6k
- Abbreviations|0
144 entries under firm topic. ×
| settled(adjective, strong, easy, solid) | |
| trustworthy(adjective, good, clear, strong, sound) | |
| undoubted(adjective, correct, solid, physical) | |
| satisfied(adjective, set, clear, content) | |
| unmistakable(adjective, clear, correct, total) | |
| inevitable(adjective, complete, full, regular) | |
| assertive(adjective, energetic, sure, aggressive) | |
| decisive(adjective, good, clear, strong) | |
| plain(adjective, clear, flat, honest) | |
| safe(adjective, good, clear, strong, sound) | |
| constant(adjective, good, strong, complete) | |
| sound(noun, adjective, clear, strong, easy) | |
| steady(adjective, good, strong, complete, easy) | |
| unquestioned(adjective, complete, sure, obedient) | |
| unqualified(adjective, clear, complete, flat) | |
| determinate(adjective, total, superior, unusual) | |
| emphatic(adjective, flat, definite, distinct) | |
| steadfast(adjective, good, strong, complete, easy) | |
| undoubting(adjective, set, clear, sure) | |
| accurate(adjective, set, clear, complete, correct) |
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| APA | Smart Define. (2016). certain thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/certain/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "certain thesaurus" https://smartdefine.org/certain/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, certain thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/certain/thesaurus/synonyms>. |
| MLA | Smart Define. "certain thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/certain/thesaurus/synonyms> |