306 entries under firm topic. ×
| clear(verb, adjective, sound, plain) | |
| committed(adjective, deep, steady, fixed) | |
| convinced(adjective, clear, certain, definite) | |
| dedicated(adjective, solid, determined, steady) | |
| enduring(adjective, calm, strong, secure, flat) | |
| indubitable(adjective, clear, solid, certain) | |
| iron(adjective, strong, tough, solid) | |
| irrefutable(adjective, clear, sound, solid) | |
| jellify(verb, form, develop, combine) | |
| nailed(verb, adjective, calm, strong, secure) | |
| on ice(expression, adjective, clear, solid) | |
| ossified(adjective, hard, solid, heavy) | |
| purposeful(adjective, strong, tough, determined) | |
| refractory(adjective, hard, tough, solid) | |
| reliable(adjective, calm, clear, strong, secure) | |
| serious(adjective, strong, severe, thoughtful) | |
| stiff-necked(adjective, usual, sure, constant) | |
| stony(adjective, hard, solid, stiff) | |
| strengthen(verb, support, hold, close, fix) | |
| strong(adjective, calm, hard, tough, flat) |
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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> |