754 entries under adjective topic. ×
| constant(strain, still, fixed, firmness) | |
| hard-nosed(mean, strong, hard, tough) | |
| resistant(strong, strain, firm, stiff) | |
| steady(feature, state, characteristic, complete) | |
| adamantine(strong, hard, tough, severe) | |
| conservative(strain, firmness, labour, hardiness) | |
| durable(strong, strain, firm, stiff) | |
| tough(mean, strong, hard, easy) | |
| unwavering(determined, resolute, persistent, constant) | |
| fast(complete, secure, strain, firm) | |
| settled(secure, strain, determined, usual) | |
| austere(strong, hard, tough, severe) | |
| solid(strong, hard, complete, secure) | |
| enduring(strain, firm, fixed, stiff) | |
| lasting(strain, firmness, labour, hardiness) | |
| permanent(strain, firmness, labour, hardiness) | |
| perpetual(strain, firmness, labour, hardiness) | |
| exacting(hard, tough, easy, severe) | |
| proof(strain, firmness, labour, hardness) | |
| quiescent(strain, firmness, labour, hardiness) |
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| APA | Smart Define. (2015). rigid thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/rigid/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rigid thesaurus" https://smartdefine.org/rigid/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, rigid thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/rigid/thesaurus/synonyms>. |
| MLA | Smart Define. "rigid thesaurus" 3 August 2015. Web. 25 September 2026. <https://smartdefine.org/rigid/thesaurus/synonyms> |