90 entries under adjective topic. ×

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incommunicable
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incommunicative
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noncommittal
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not talkativ(expression, close, quiet, soft)
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slumberous(hushed, wordless)
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surreptitiousness(hushed, wordless)
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tightlipped
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uncommunicable
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unmoving(tranquil, silent, motionless, immobile)
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unobtrusive(close, quiet, soft, low)
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APASmart Define. (2013). clammed up thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/clammed_up/thesaurus/synonyms
ChicagoSmart Define. 2013. "clammed up thesaurus" https://smartdefine.org/clammed_up/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2013, clammed up thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/clammed_up/thesaurus/synonyms>.
MLASmart Define. "clammed up thesaurus" 18 May 2013. Web. 23 September 2026. <https://smartdefine.org/clammed_up/thesaurus/synonyms>