120 entries under severe topic. ×
| onerous(adjective, tough, difficult, painful) | |
| static(secure, exact, still, fixed) | |
| taxing(adjective, hard, difficult, harsh) | |
| titanic(tough, painful, problematic, trying) | |
| unbreakable(adjective, strong, hard, firm) | |
| unfeeling(adjective, hard, cool, harsh) | |
| acrimonious(adjective, harsh, rigid, tight) | |
| ambitious(tough, painful, problematic, trying) | |
| backbreaker(tough, painful, problematic, trying) | |
| binding(adjective, harsh, affected, rigid) | |
| bothersome(tough, painful, problematic, trying) | |
| brick-wall(adjective, constant, rigid, tight) | |
| by the book(expression, adjective, idiom, harsh) | |
| by the numbers(expression, adjective, idiom, correct) | |
| compelling(adjective, strong, great, firm) | |
| confining(adjective, harsh, rigid, tight) | |
| convincing(adjective, strong, great, firm) | |
| crucial(tough, painful, problematic, trying) | |
| dead set on(expression, adjective, idiom, harsh) | |
| difficile(tough, painful, problematic, trying) |
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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> |