238 entries under severe topic. ×
| obstinate(adjective, mean, hard, tough, moderate) | |
| harsh(adjective, mean, strong, hard, tough) | |
| stern(adjective, hard, tough, easy) | |
| rigorous(adjective, strong, hard, tough, correct) | |
| tight(adjective, close, strong, secure) | |
| unalterable(adjective, strain, harsh, cruel) | |
| invariable(adjective, strain, fixed, stiff) | |
| hard-nosed(adjective, mean, strong, hard, tough) | |
| adamantine(adjective, strong, hard, tough) | |
| tough(adjective, mean, strong, hard, easy) | |
| austere(adjective, strong, hard, tough) | |
| solid(adjective, strong, hard, complete, secure) | |
| exacting(adjective, hard, tough, easy) | |
| stringent(adjective, hard, tough, rough) | |
| hidebound(adjective, moderate, determined, resolute) | |
| inelastic(adjective, hard, tough, firm) | |
| set in stone(expression, adjective, idiom, mean, hard) | |
| exact(adjective, correct, solid, proper) | |
| precise(adjective, hard, correct, rough) | |
| strait-laced(adjective, tough, correct, firm) |
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| APA | Smart Define. (2015). rigid thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/rigid/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rigid thesaurus" https://smartdefine.org/rigid/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, rigid thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/rigid/thesaurus/synonyms>. |
| MLA | Smart Define. "rigid thesaurus" 3 August 2015. Web. 24 September 2026. <https://smartdefine.org/rigid/thesaurus/synonyms> |