98 entries under harsh topic. ×
| firm(noun, adjective, feature, state, characteristic) | |
| rigid(adjective, feature, state, characteristic, strong) | |
| hard(adjective, feature, state, characteristic, hard) | |
| unyielding(adjective, strong, hard, tough, strain) | |
| inflexible(adjective, hard, tough, severe, rough) | |
| stubborn(adjective, hard, tough, rough, firm) | |
| refractory(adjective, hard, tough, strain, rough) | |
| inexorable(adjective, tough, severe, firm) | |
| uncompromising(adjective, hard, tough, severe, rough) | |
| resolute(adjective, strong, hard, tough, severe) | |
| unbending(adjective, hard, correct, severe, rough) | |
| determined(adjective, strong, solid, cruel) | |
| obdurate(adjective, hard, tough, severe, rough) | |
| unrelenting(adjective, tough, severe, firm) | |
| fixed(adjective, set, hard, secure, rough) | |
| relentless(adjective, tough, severe, firm) | |
| obstinate(adjective, hard, tough, rough, firm) | |
| tough(adjective, strong, hard, severe, rough) | |
| adamant(adjective, hard, rough, firm) | |
| severe(adjective, hard, tough, rough, firm) |
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| APA | Smart Define. (2015). stiff thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/stiff/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, stiff thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>. |
| MLA | Smart Define. "stiff thesaurus" 24 December 2015. Web. 23 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms> |