891 entries under adjective topic. ×
| persistent(feature, state, characteristic, strong) | |
| stiff(feature, state, characteristic, set) | |
| rigid(feature, state, characteristic, mean) | |
| strong(calm, good, set, strong) | |
| stable(calm, good, strong, hard) | |
| hard(adverb, feature, state, characteristic) | |
| unyielding(set, mean, clear, strong) | |
| sound(noun, calm, strong, hard) | |
| steadfast(feature, state, characteristic, calm) | |
| consistent(strain, solid, certain, determined) | |
| unfluctuating(calm, strong, secure, strain) | |
| determined(good, set, clear, strong) | |
| steady(feature, state, characteristic, calm) | |
| resolute(calm, close, set, clear) | |
| inflexible(mean, strong, hard, secure) | |
| fixed(characteristic, calm, change, set) | |
| stubborn(resolute, determined, uncompromising, obstinate) | |
| constant(calm, good, close, strong) | |
| fast(adverb, calm, close, strong) | |
| substantial(calm, close, strong, hard) |
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| APA | Smart Define. (2016). firm thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/firm/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "firm thesaurus" https://smartdefine.org/firm/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, firm thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/firm/thesaurus/synonyms>. |
| MLA | Smart Define. "firm thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/firm/thesaurus/synonyms> |