65 entries under determined topic. ×
| hard(adjective, tough, severe, firm, attitude) | |
| obdurate(adjective, person, hard, tough, severe) | |
| inflexible(adjective, person, hard, tough, firm) | |
| adamant(adjective, person, feelings, resolute) | |
| firm(adjective, set, strong, hard, tough) | |
| stubborn(adjective, characteristic, quality, hard, careless) | |
| adamantine(adjective, strong, firm, stiff) | |
| unrelenting(adjective, hard, tough, harsh) | |
| unyielding(adjective, set, hard, tough, firm) | |
| hard-nosed(adjective, hard, resolute, unfeeling) | |
| intransigent(adjective, fixed, resolute, stubborn) | |
| obstinate(adjective, fixed, resolute, stubborn) | |
| ossified(adjective, firm, solid, resolute) | |
| unbending(adjective, hard, firm, solid, careless) | |
| unforgiving(adjective, person, hard, tough, harsh) | |
| hardheaded(adjective, resolute, uncompromising, unshakeable) | |
| inexorable(adjective, hard, tough, harsh) | |
| mulish(adjective, fixed, resolute, stubborn) | |
| opinionated(adjective, fixed, resolute, stubborn) | |
| relentless(adjective, hard, tough, harsh, cold) |
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| APA | Smart Define. (2016). hardened thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, hardened thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>. |
| MLA | Smart Define. "hardened thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms> |