754 entries under adjective topic. ×
| thorough(complete, severe, harsh, pure) | |
| unadaptable(set, hard, stiff, resolute) | |
| unbreakable(strong, hard, severe, firm) | |
| wooden(hard, correct, firm, solid) | |
| Draconian(tough, severe, firm, harsh) | |
| Spartan | |
| aloof(cool, tough, firm, fair) | |
| bovine(determined, resolute, obstinate, uncompromising) | |
| brass-bound(determined, resolute, obstinate, uncompromising) | |
| bull-headed(determined, resolute, obstinate, uncompromising) | |
| dead set(expression, tough, severe, firm) | |
| difficult(hard, tough, severe, rough) | |
| distant(tough, firm, cold, unfriendly) | |
| extreme | |
| faithful(correct, solid, intense, exact) | |
| finical | |
| hardened(strong, hard, tough, firm) | |
| icy(cool, severe, cold, detached) | |
| immobile(secure, intense, still, steady) | |
| ironclad(set, hard, severe, cruel) |
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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> |