70 entries under tough topic. ×
| unshakable(adjective, firm, solid, determined) | |
| adamantine(firm, cruel, stiff, strict) | |
| balky(firm, unreasonable, grim, persistent) | |
| bullheaded(severe, firm, determined, unreasonable) | |
| crisp(adjective, firm, fixed, distant) | |
| distant(adjective, firm, fixed, rigid) | |
| do or die(expression, adjective, idiom, firm) | |
| dug in(expression, adjective, firm, distant) | |
| formal(adjective, firm, fixed, distant) | |
| grim(adjective, firm, harsh, cruel) | |
| hard as nails(expression, adjective, idiom, firm) | |
| hardheaded(firm, determined, unreasonable, grim) | |
| hold the fort(expression, adjective, idiom, firm) | |
| hold the line(expression, adjective, idiom, firm) | |
| incompliant(adjective, severe, firm, harsh) | |
| inelastic(adjective, severe, firm, harsh) | |
| intransigent(adjective, severe, firm, determined) | |
| ornery(firm, unreasonable, grim, persistent) | |
| perverse(adjective, firm, unreasonable, grim) | |
| rebellious(adjective, firm, unreasonable, grim) |
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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> |