65 entries under toughened topic. ×

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unimpressionable(adjective, hard, unfeeling, unsympathetic, hardened)
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unresponsive(adjective, hard, unfeeling, unsympathetic, hardened)
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unsentimental(adjective, cynical, hard-boiled, hard-bitten)
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unsusceptible(adjective, hard, unfeeling, unsympathetic, hardened)
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unsympathetic(adjective, hard, unfeeling, hardened)
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APASmart Define. (2015). seasoned thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/seasoned/thesaurus/synonyms
ChicagoSmart Define. 2015. "seasoned thesaurus" https://smartdefine.org/seasoned/thesaurus/synonyms (accessed October 2, 2026).
HarvardSmart Define 2015, seasoned thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/seasoned/thesaurus/synonyms>.
MLASmart Define. "seasoned thesaurus" 8 September 2015. Web. 2 October 2026. <https://smartdefine.org/seasoned/thesaurus/synonyms>