796 entries under adjective topic. ×
| immobile(strong, secure, fixed, impassive) | |
| irreducible(simple, whole, united) | |
| irrefutable(sound, reasonable, material, certain) | |
| jam-packed(close, strong, short, substantial) | |
| jelled(set, hard, tough, firm) | |
| law-abiding(pure, real, genuine, reliable) | |
| permanent(calm, strong, secure, steady) | |
| persistent(strong, tough, firm, certain) | |
| resistant(strong, hard, tough, fit) | |
| same(simple, whole, united) | |
| satisfactory(good, clear, great, reasonable) | |
| self-colored | |
| stationary(calm, strong, fixed, constant) | |
| stony(hard, firm, stiff, rigid) | |
| straight(open, direct, honest, modest) | |
| substantive(physical, material, substantial, actual) | |
| unalloyed(complete, continuous, closed, blocked) | |
| unbending(hard, firm, stiff, tense) | |
| unbreakable(strong, hard, tough, severe) | |
| unchangeable(calm, strong, secure, firm) |
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| APA | Smart Define. (2016). solid thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/solid/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, solid thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>. |
| MLA | Smart Define. "solid thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms> |