209 entries under adjective topic. ×

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hardhearted(unfriendly, unemotional, emotionless)
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hidden(quiet, reserved, secret, private)
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ice-cold
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impersonal(unfriendly, unemotional, emotionless)
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inhospitable(unfriendly, unemotional, emotionless)
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insouciant
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joyless(unfriendly, unemotional, emotionless)
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long-faced
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lukewarm(unfriendly, unemotional, emotionless)
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mirthless
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morbid
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motionless
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nongregarious(quiet, restrained, detached, thoughtful)
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recluse(quiet, restrained, detached, thoughtful)
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retreated(quiet, restrained, detached, thoughtful)
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secluded(quiet, reserved, secret, private)
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secret(quiet, reserved, private, reticent)
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strait-laced
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tight chops(expression, quiet, reserved, secret)
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tranquil
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APASmart Define. (2015). taciturn thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/taciturn/thesaurus/synonyms
ChicagoSmart Define. 2015. "taciturn thesaurus" https://smartdefine.org/taciturn/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, taciturn thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/taciturn/thesaurus/synonyms>.
MLASmart Define. "taciturn thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/taciturn/thesaurus/synonyms>