66 entries under toughened topic. ×
| torpid(adjective, hard, unfeeling, unsympathetic, hardened) | |
| unimpressionable(adjective, hard, unfeeling, unsympathetic, hardened) | |
| unresponsive(adjective, hard, unfeeling, unsympathetic, hardened) | |
| unsentimental(adjective, cynical, hard-boiled, hard-bitten) | |
| unsusceptible(adjective, hard, unfeeling, unsympathetic, hardened) | |
| unsympathetic(adjective, hard, unfeeling, hardened) |
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| APA | Smart Define. (2015). prepared thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/prepared/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "prepared thesaurus" https://smartdefine.org/prepared/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2015, prepared thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/prepared/thesaurus/synonyms>. |
| MLA | Smart Define. "prepared thesaurus" 6 October 2015. Web. 30 September 2026. <https://smartdefine.org/prepared/thesaurus/synonyms> |