108 entries under adjective topic. ×

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motionless(calm, quiet, smooth, tranquil)
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poker-faced
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remote
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rigid
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strait-laced
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unmoving(tranquil, silent, motionless, immobile)
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unobtrusive(close, quiet, soft, low)
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unsocial
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APASmart Define. (2015). close-mouthed thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/close-mouthed/thesaurus/synonyms
ChicagoSmart Define. 2015. "close-mouthed thesaurus" https://smartdefine.org/close-mouthed/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, close-mouthed thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/close-mouthed/thesaurus/synonyms>.
MLASmart Define. "close-mouthed thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/close-mouthed/thesaurus/synonyms>