67 entries under toughened topic. ×
| unimpressionable(adjective, hard, careless, indifferent, cruel) | |
| unsubmissive(adjective, hard, unfeeling, unsympathetic, callous) | |
| unsusceptible(noun, adjective, hard, careless, indifferent) | |
| contemptuous(adjective, hard, unfeeling, unsympathetic) | |
| disdainful(adjective, hard, unfeeling, unsympathetic) | |
| hard-edged(adjective, stubborn, cynical, hard-boiled) | |
| inaccessible(adjective, hard, unfeeling, unsympathetic) |
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| APA | Smart Define. (2016). hardened thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2016, hardened thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>. |
| MLA | Smart Define. "hardened thesaurus" 29 March 2016. Web. 30 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms> |