306 entries under firm topic. ×
| substantial(adjective, calm, strong, hard, secure) | |
| undeviating(adjective, strong, severe, flat) | |
| undoubted(adjective, clear, sound, solid) | |
| unfaltering(adjective, solid, certain, steady) | |
| unflappable(adjective, solid, certain, usual) | |
| unqualified(adjective, clear, strong, flat) | |
| unshaken(adjective, clear, strong, flat) | |
| unswerving(adjective, strong, tough, solid) | |
| abiding(adjective, calm, strong, secure, flat) | |
| brace(noun, verb, hold, calm, close) | |
| brittle(adjective, hard, solid, stiff) | |
| buttress(verb, support, calm, close, fix) | |
| calcified(adjective, close, solid, contract) | |
| callous(verb, adjective, close, fix, hard) | |
| cemented(verb, adjective, strong, hard) | |
| compressed(verb, adjective, hard, tough, slight) | |
| concentrated(verb, adjective, strong, hard, tough) | |
| dead set on(expression, adjective, idiom, strong, secure) | |
| earnest(adjective, severe, honest, thoughtful) | |
| equable(adjective, calm, strong, secure) |
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| APA | Smart Define. (2016). set thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/set/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "set thesaurus" https://smartdefine.org/set/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, set thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/set/thesaurus/synonyms>. |
| MLA | Smart Define. "set thesaurus" 1 March 2016. Web. 23 September 2026. <https://smartdefine.org/set/thesaurus/synonyms> |