238 entries under severe topic. ×
| static(adjective, set, secure, still) | |
| critical | |
| cruel(adjective, strong, hard, tough) | |
| dour(adjective, hard, tough, firm) | |
| hard-line(adjective, strong, hard, tough) | |
| prudish(adjective, tough, correct, firm) | |
| changeless(adjective, set, firm, still) | |
| cold(adjective, hard, cool, harsh) | |
| correct(adjective, hard, rough, difficult) | |
| oppressive(adjective, hard, tough, rough) | |
| pitiless(adjective, harsh, cruel, determined) | |
| proper(adjective, hard, correct, rough) | |
| stark(adjective, hard, firm, solid) | |
| thorough(adjective, complete, harsh, pure) | |
| unbreakable(adjective, strong, hard, firm) | |
| Draconian(adjective, tough, firm, harsh) | |
| Spartan | |
| dead set(expression, adjective, tough, firm) | |
| difficult(adjective, hard, tough, rough) | |
| icy(adjective, cool, cold, detached) |
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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> |