125 entries under unresponsive topic. ×

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dumb(dull, slow, stupid)
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earnest(adjective, calm, restrained, subdued)
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eschewing(adjective, calm, restrained, subdued)
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forgoing(adjective, calm, restrained, subdued)
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going with the flow(expression, adjective, idiom, detached)
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grave(adjective, calm, restrained, subdued)
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inanimate(still, lifeless, lethargic, languid)
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inhibited(adjective, calm, restrained, subdued)
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low-key(adjective, calm, quiet, cool, restrained)
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lucid(adjective, calm, restrained, subdued)
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marble(adjective, detached, laid-back, reticent)
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no-nonsense(adjective, calm, restrained, rational, straightforward)
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not responsive(expression, adjective, detached, unfeeling)
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peaceful dull(expression, calm, restrained, subdued)
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rational(adjective, calm, restrained, straightforward, realistic)
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reasonable(adjective, calm, restrained, subdued)
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rolling with the punches(expression, adjective, idiom, detached)
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severe(adjective, calm, restrained, subdued)
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slow-witted(dull, slow, stupid)
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solemn(adjective, calm, restrained, subdued)
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APASmart Define. (2015). impassive thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/impassive/thesaurus/synonyms
ChicagoSmart Define. 2015. "impassive thesaurus" https://smartdefine.org/impassive/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, impassive thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impassive/thesaurus/synonyms>.
MLASmart Define. "impassive thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/impassive/thesaurus/synonyms>