260 entries under adjective topic. ×
| bound(verb, strong, tough, firm) | |
| bullhead(mean, hard, tough, harsh) | |
| burly | |
| buttoned down(expression, strong, solid, stable) | |
| callous(set, mean, strong, hard) | |
| cantankerous(persistent, obstinate, insistent, dogged) | |
| chopping | |
| cinereal(dull, lead, grim, leaden) | |
| clouded(dull, lead, grim, leaden) | |
| cold fish(expression, mean, hard, unfeeling) | |
| confirmed(persistent, obstinate, insistent, dogged) | |
| contrary(persistent, obstinate, insistent, dogged) | |
| contumacious(persistent, obstinate, insistent, dogged) | |
| cordial | |
| cussed(persistent, obstinate, insistent, dogged) | |
| dead set(determined, resolute, uncompromising, unshakeable) | |
| decided | |
| defiant(persistent, obstinate, insistent, dogged) | |
| demanding(persistent, obstinate, insistent, dogged) | |
| disobedient(persistent, obstinate, insistent, dogged) |
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| APA | Smart Define. (2015). iron thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/iron/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "iron thesaurus" https://smartdefine.org/iron/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, iron thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/iron/thesaurus/synonyms>. |
| MLA | Smart Define. "iron thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/iron/thesaurus/synonyms> |