48 entries under hard-hearted topic. ×

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uncordial(adjective, unfeeling, nowhere, obdurate)
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unexcited(adjective, quiet, restrained, sober, unfeeling)
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unfeeling(adjective, tough, nowhere, obdurate)
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unimpassioned(adjective, sober, unfeeling, factual)
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unimpressed(adjective, unfeeling, nowhere, untouched)
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uninfluenced(adjective, unfeeling, nowhere, untouched)
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unsocial(adjective, single, isolated, unassertive)
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with straight face(expression, adjective, idiom, unfeeling)
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APASmart Define. (2013). hardboiled thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/hardboiled/thesaurus/synonyms
ChicagoSmart Define. 2013. "hardboiled thesaurus" https://smartdefine.org/hardboiled/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2013, hardboiled thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/hardboiled/thesaurus/synonyms>.
MLASmart Define. "hardboiled thesaurus" 18 May 2013. Web. 30 September 2026. <https://smartdefine.org/hardboiled/thesaurus/synonyms>