72 entries under restrained topic. ×

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reasonable(adjective, calm, subdued, impassive)
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sedate(adjective, calm, subdued, impassive)
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serious(adjective, calm, subdued, impassive)
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soft(adjective, calm, subdued, impassive)
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solemn(adjective, calm, subdued, impassive)
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somber(adjective, calm, subdued, impassive)
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sound(adjective, calm, subdued, impassive)
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staid(adjective, calm, subdued, impassive)
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subdued(adjective, calm, impassive, unresponsive)
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tepid(adjective, calm, subdued, impassive)
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toned down(expression, adjective, calm, subdued)
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unimpassioned(adjective, calm, unfeeling, subdued)
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APASmart Define. (2016). hard-hearted thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hard-hearted/thesaurus/synonyms
ChicagoSmart Define. 2016. "hard-hearted thesaurus" https://smartdefine.org/hard-hearted/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, hard-hearted thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hard-hearted/thesaurus/synonyms>.
MLASmart Define. "hard-hearted thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/hard-hearted/thesaurus/synonyms>