128 entries under unresponsive topic. ×

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levelheaded(adjective, calm, restrained, subdued, impassive)
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low-key(adjective, calm, restrained, subdued, impassive)
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lucid(adjective, calm, restrained, subdued, impassive)
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no-nonsense(adjective, calm, restrained, subdued, impassive)
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pacific(adjective, calm, restrained, subdued, impassive)
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peaceful dull(expression, calm, restrained, subdued, impassive)
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plain(adjective, calm, restrained, subdued, impassive)
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practical(adjective, calm, restrained, subdued, impassive)
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quiet(adjective, calm, restrained, subdued, impassive)
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rational(adjective, calm, restrained, subdued, impassive)
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realistic(adjective, calm, restrained, subdued, impassive)
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reasonable(adjective, calm, restrained, subdued, impassive)
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restrained(adjective, calm, subdued, impassive)
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sedate(adjective, calm, restrained, subdued, impassive)
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serene(adjective, calm, restrained, subdued, impassive)
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serious(adjective, calm, restrained, subdued, impassive)
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severe(adjective, calm, restrained, subdued, impassive)
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soft(adjective, calm, restrained, subdued, impassive)
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solemn(adjective, calm, restrained, subdued, impassive)
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somber(adjective, calm, restrained, subdued, impassive)
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APASmart Define. (2015). impervious thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/impervious/thesaurus/synonyms
ChicagoSmart Define. 2015. "impervious thesaurus" https://smartdefine.org/impervious/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, impervious thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impervious/thesaurus/synonyms>.
MLASmart Define. "impervious thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/impervious/thesaurus/synonyms>