187 entries under hard topic. ×
| indurated(adjective, set, firm, careless) | |
| ossified(adjective, set, firm, solid) | |
| ruthless(adjective, rough, harsh, cruel) | |
| taxing(adjective, severe, difficult, harsh) | |
| thickened(adjective, set, firm, solid) | |
| unadaptable(adjective, set, resolute, rigid) | |
| unaffected(adjective, careless, indifferent, cruel) | |
| unbreakable(adjective, strong, severe, firm) | |
| unemotional(adjective, detached, unfeeling, unsympathetic) | |
| unfeeling(adjective, cool, severe, harsh) | |
| unforgiving(adjective, rough, harsh, cruel) | |
| annealed(adjective, firm, rigid, inflexible) | |
| apathetic(adjective, dull, slow, careless) | |
| arthritic(adjective, firm, dead, rigid) | |
| benumbed(adjective, firm, unfeeling, unsympathetic) | |
| blind to(expression, adjective, careless, indifferent) | |
| case-hardened(adjective, careless, indifferent, cruel) | |
| cemented(adjective, firm, rigid, inflexible) | |
| chilled(adjective, firm, rigid, inflexible) | |
| close-grained(tough, solid, rigid, inflexible) |
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| APA | Smart Define. (2015). stiff thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/stiff/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, stiff thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>. |
| MLA | Smart Define. "stiff thesaurus" 24 December 2015. Web. 25 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms> |