125 entries under determined topic. ×
| insistent(adjective, resolute, obstinate, uncompromising) | |
| adamant(adjective, mean, strong, hard, tough) | |
| obstinate(adjective, mean, hard, tough, moderate) | |
| harsh(adjective, mean, strong, hard, tough) | |
| unshakable(adjective, mean, hard, unreasonable) | |
| unbendable(adjective, firm, resist, unreasonable) | |
| rigorous(adjective, strong, hard, tough, correct) | |
| hard-nosed(adjective, mean, strong, hard, tough) | |
| steady(adjective, feature, state, characteristic, complete) | |
| adamantine(adjective, strong, hard, tough, severe) | |
| tough(adjective, mean, strong, hard, easy) | |
| unwavering(adjective, resolute, persistent, constant) | |
| settled(adjective, secure, strain, usual) | |
| stringent(adjective, hard, tough, severe, rough) | |
| hidebound(adjective, moderate, severe, resolute) | |
| inelastic(adjective, hard, tough, severe, firm) | |
| set in stone(expression, adjective, idiom, mean, hard) | |
| implacable(adjective, mean, strong, hard, tough) | |
| resolved(adjective, severe, harsh, cruel) | |
| tenacious(adjective, resolute, persistent, obstinate) |
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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> |