25 entries under tight-lipped topic. ×

1
uncommunicative(adjective, close, quiet, soft, low)
1
unsociable(adjective, quiet, still, shy, silent)
1
voiceless(adjective, quiet, still, shy, silent)
1
wordless(adjective, close, quiet, restrained, still)
1
zipped(adjective, quiet, still, shy, silent)
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APASmart Define. (2015). unspeaking thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/unspeaking/thesaurus/synonyms
ChicagoSmart Define. 2015. "unspeaking thesaurus" https://smartdefine.org/unspeaking/thesaurus/synonyms (accessed October 2, 2026).
HarvardSmart Define 2015, unspeaking thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/unspeaking/thesaurus/synonyms>.
MLASmart Define. "unspeaking thesaurus" 10 April 2015. Web. 2 October 2026. <https://smartdefine.org/unspeaking/thesaurus/synonyms>