423 entries under adjective topic. ×
| obtuse(noun, hard, indifferent, unfeeling) | |
| passionless(cool, blank, aloof, unemotional) | |
| passive | |
| pat(determined, resolute, uncompromising, unshakeable) | |
| pertinacious(determined, fixed, resolute, stubborn) | |
| perverse(determined, fixed, resolute, stubborn) | |
| pigheaded(determined, fixed, resolute, stubborn) | |
| pugnacious | |
| reprobate(rude, corrupt, wicked, immoral) | |
| resistant(strong, hard, tough, fit) | |
| rocklike(firm, stiff, rigid) | |
| rough(person, hard, fit, feelings) | |
| rugged(strong, fit, healthy, well) | |
| sclerotic | |
| self-opinionated(determined, resolute, uncompromising, unshakeable) | |
| self-willed(determined, fixed, resolute, stubborn) | |
| severe(hard, tough, cruel, unsympathetic) | |
| stale | |
| stiff-necked(determined, resolute, uncompromising, unshakeable) | |
| unmerciful(hard, tough, harsh, cruel) |
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| APA | Smart Define. (2016). hardened thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, hardened thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>. |
| MLA | Smart Define. "hardened thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms> |