158 entries under adjective topic. ×

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groggy(calm, dull, flat, unemotional)
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hardhearted(unfriendly, unemotional, emotionless, taciturn)
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inexpressive(detached, impassive, unresponsive, dispassionate)
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inhospitable(cool, unfriendly, aloof, distant)
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joyless(cool, unfriendly, aloof, distant)
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lethargic(calm, dull, flat, unemotional)
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lifeless(calm, dull, flat, unemotional)
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recluse(quiet, restrained, detached, thoughtful)
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retired(quiet, restrained, thoughtful, solitary)
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retreated(quiet, restrained, detached, thoughtful)
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sluggish(calm, dull, flat, unemotional)
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sober(cool, detached, unemotional)
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stoical(restrained, unemotional, phlegmatic)
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stony(cool, unfriendly, aloof, distant)
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strait-laced
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uncurious(quiet, restrained, detached, thoughtful)
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uninvolved(calm, dull, flat, unemotional)
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unkind(unfriendly, unemotional, emotionless, taciturn)
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APASmart Define. (2015). undemonstrative thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/undemonstrative/thesaurus/synonyms
ChicagoSmart Define. 2015. "undemonstrative thesaurus" https://smartdefine.org/undemonstrative/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, undemonstrative thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/undemonstrative/thesaurus/synonyms>.
MLASmart Define. "undemonstrative thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/undemonstrative/thesaurus/synonyms>