96 entries under strict topic. ×
| pitiless(adjective, severe, harsh, cruel, determined) | |
| sharp(adjective, clear, pleasant, severe, bright) | |
| close(adjective, set, hard, tough, severe) | |
| forbidding(adjective, hard, cool, severe, harsh) | |
| single-minded(adjective, tough, firm, harsh, cruel) | |
| unmoving(adjective, severe, exact, still, fixed) | |
| definite(adjective, clear, hard, cool, pleasant) | |
| demanding(adjective, hard, tough, severe, rough) | |
| fierce(adjective, hard, rough, harsh, cruel) | |
| ruthless(adjective, hard, rough, harsh, cruel) | |
| sore(adjective, upset, rough, harsh, tender) | |
| static(secure, severe, exact, still, fixed) | |
| taxing(adjective, hard, severe, difficult, harsh) | |
| unadaptable(adjective, set, hard, resolute, rigid) | |
| unbreakable(adjective, strong, hard, severe, firm) | |
| unfeeling(adjective, hard, cool, severe, harsh) | |
| acrimonious(adjective, severe, harsh, rigid, tight) | |
| binding(adjective, severe, harsh, affected, rigid) | |
| brick-wall(adjective, severe, constant, rigid, tight) | |
| by the book(expression, adjective, idiom, severe, harsh) |
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| APA | Smart Define. (2015). stiff thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/stiff/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, stiff thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>. |
| MLA | Smart Define. "stiff thesaurus" 24 December 2015. Web. 24 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms> |