70 entries under tough topic. ×
| unbending(adjective, harsh, cruel, determined) | |
| uncompromising(adjective, firm, harsh, cruel) | |
| contumacious(adjective, firm, unreasonable, grim) | |
| iron(adjective, firm, unreasonable, grim) | |
| mulish(adjective, firm, determined, resolute) | |
| recalcitrant(adjective, firm, persistent, obstinate) | |
| refractory(adjective, firm, persistent, obstinate) | |
| stiff(adjective, firm, harsh, cruel) | |
| uncompliant(adjective, firm, unreasonable, grim) | |
| unrelenting(adjective, firm, harsh, cruel) | |
| cantankerous(firm, persistent, obstinate, stubborn) | |
| cussed(firm, persistent, obstinate, stubborn) | |
| headstrong(adjective, firm, unreasonable, grim) | |
| implacable(adjective, firm, harsh, cruel) | |
| insubordinate(firm, persistent, obstinate, stubborn) | |
| locked in(expression, adjective, firm, cruel) | |
| pigheaded(adjective, firm, determined, resolute) | |
| remorseless(adjective, firm, harsh, cruel) | |
| set in stone(expression, adjective, idiom, firm) | |
| unmanageable(firm, persistent, obstinate, stubborn) |
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| APA | Smart Define. (2015). single-minded thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/single-minded/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "single-minded thesaurus" https://smartdefine.org/single-minded/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, single-minded thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/single-minded/thesaurus/synonyms>. |
| MLA | Smart Define. "single-minded thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/single-minded/thesaurus/synonyms> |