Synonyms|96Antonyms|5|Broader|0Narrower|0Related|124
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nonemotional(adjective, unfeeling, hard-hearted, nowhere, obdurate)
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nowhere(adjective, unfeeling, hard-hearted, obdurate, unimpassioned)
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oak
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plucky
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resolute
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spirited
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stony-eyed(adjective, unfeeling, hard-hearted, nowhere, obdurate)
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stout
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toneless(adjective, unfeeling, hard-hearted, nowhere, obdurate)
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unexcited(adjective, unfeeling, hard-hearted, nowhere, obdurate)
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unimpassioned(adjective, unfeeling, hard-hearted, nowhere, obdurate)
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unimpressed(adjective, unfeeling, hard-hearted, nowhere, obdurate)
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unimpressible(adjective, unfeeling, hard-hearted, nowhere, obdurate)
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valiant
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valorous
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with straight face(expression, adjective, idiom, unfeeling, hard-hearted)
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APASmart Define. (2013). iron-hearted thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/iron-hearted/thesaurus/synonyms
ChicagoSmart Define. 2013. "iron-hearted thesaurus" https://smartdefine.org/iron-hearted/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2013, iron-hearted thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/iron-hearted/thesaurus/synonyms>.
MLASmart Define. "iron-hearted thesaurus" 19 May 2013. Web. 29 September 2026. <https://smartdefine.org/iron-hearted/thesaurus/synonyms>