- Definitions|2
- Thesaurus|4.6k
- Abbreviations|0
124 entries under solid topic. ×
| responsible(adjective, good, strong, true) | |
| sensible(adjective, understanding, reasonable, keen, firm) | |
| substantial(adjective, firm, physical, material) | |
| unfluctuating(adjective, firm, stable, fixed) | |
| unswerving(adjective, firm, stable, fixed) | |
| unvarying(adjective, set, clear, firm) | |
| well-founded(adjective, strong, reasonable, easy, sensible) | |
| abiding(adjective, set, clear, complete, firm) | |
| able(adjective, strong, easy, definite) | |
| balanced(adjective, strong, easy, firm) | |
| candid(good, strong, true, steady) | |
| cool(adjective, firm, extraordinary, unusual) | |
| enduring(adjective, set, clear, complete, firm) | |
| immovable(adjective, firm, determined, usual) | |
| impeccable(good, strong, steady, flawless) | |
| incorrupt(good, strong, steady, consistent) | |
| intense(adjective, firm, stable, fixed) | |
| locked on(expression, adjective, strong, easy) | |
| nailed down(expression, adjective, strong, easy) | |
| okay(good, strong, steady, consistent) |
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| APA | Smart Define. (2016). certain thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/certain/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "certain thesaurus" https://smartdefine.org/certain/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, certain thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/certain/thesaurus/synonyms>. |
| MLA | Smart Define. "certain thesaurus" 31 March 2016. Web. 21 September 2026. <https://smartdefine.org/certain/thesaurus/synonyms> |