306 entries under firm topic. ×
| sturdy(adjective, calm, strong, hard, tough) | |
| taut(adjective, strong, hard, solid) | |
| unfluctuating(adjective, calm, strong, secure) | |
| unmistakable(adjective, clear, direct, sound) | |
| vitrified(adjective, close, fix, solid) | |
| amalgamate(verb, close, fix, develop, secure) | |
| anneal(verb, close, fix, settle) | |
| annealed(verb, adjective, hard, solid) | |
| ardent(adjective, solid, true, stable) | |
| arthritic(adjective, hard, solid, stiff) | |
| austere(adjective, tough, severe, honest) | |
| bake(verb, close, fix, settle) | |
| benumbed(adjective, hard, solid, stiff) | |
| brick-wall(adjective, calm, strong, secure, severe) | |
| buckram(adjective, hard, solid, stiff) | |
| caked(adjective, solid, heavy, deep) | |
| calcify(verb, close, fix, settle) | |
| calm(verb, adjective, fix, strong, secure) | |
| caseharden(verb, close, dry, harden) | |
| chilled(verb, adjective, hard, solid) |
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| APA | Smart Define. (2016). set thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/set/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "set thesaurus" https://smartdefine.org/set/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, set thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/set/thesaurus/synonyms>. |
| MLA | Smart Define. "set thesaurus" 1 March 2016. Web. 24 September 2026. <https://smartdefine.org/set/thesaurus/synonyms> |