| steeled against(verb, phrasal verb, insensibility) | |
| stiff-necked(adjective, determined, resolute, uncompromising, unshakeable) | |
| supported(verb, strengthened) | |
| unapologetic | |
| unmerciful(adjective, hard, tough, harsh, cruel) | |
| unrepenting(adjective, hard, tough, harsh, cruel) | |
| unsentimental(adjective, toughened, cynical, hard-boiled, hard-bitten) | |
| vitrified | |
| abandoned(adjective, bad, complete, rude, corrupt) | |
| absolute(adjective, exemplary) | |
| acclimatised | |
| accommodated | |
| accustom | |
| adapted | |
| adept(skilled, experienced, seasoned, veteran) | |
| adjusted | |
| ant's pants(adjective, exemplary) | |
| archetypal(adjective, exemplary) | |
| armored | |
| arthritic(adjective, hard, firm, solid, stiff) |
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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> |