72 entries under dedicated topic. ×
| firm(noun, adjective, adverb, calm, close) | |
| persistent(adjective, strong, tough, strain, firm) | |
| stable(adjective, adverb, strong, secure, tough) | |
| steadfast(adjective, characteristic, calm, close, strong) | |
| enduring(adjective, state, calm, close, strong) | |
| fixed(adjective, adverb, strong, complete, secure) | |
| constant(adjective, calm, close, strong, sound) | |
| steady(adjective, adverb, calm, close, strong) | |
| rigid(adjective, complete, secure, strain, firm) | |
| unyielding(adjective, strong, secure, tough, strain) | |
| loyal(adjective, characteristic, close, correct, continue) | |
| faithful(adjective, characteristic, close, correct, continue) | |
| immovable(adjective, strong, secure, firm, solid) | |
| staunch(adjective, calm, close, strong, secure) | |
| sure(adjective, calm, close, strong, secure) | |
| true(adjective, close, strong, tough, correct) | |
| unwavering(adjective, calm, close, strong, secure) | |
| devoted(adjective, close, correct, warm, firm) | |
| immobile(adjective, strong, secure, solid, intense) | |
| stubborn(adjective, characteristic, quality, strong, secure) |
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| APA | Smart Define. (2016). fast thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fast/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fast thesaurus" https://smartdefine.org/fast/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, fast thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fast/thesaurus/synonyms>. |
| MLA | Smart Define. "fast thesaurus" 1 April 2016. Web. 21 September 2026. <https://smartdefine.org/fast/thesaurus/synonyms> |