20 entries under tight-lipped topic. ×

2
mum(adjective, quiet, soft, low, still)
2
silent(adjective, close, quiet, soft, low)
1
bashful(quiet, soft, still, shy, silent)
1
buttoned up(expression, adjective, close, quiet, soft)
1
clammed up(expression, adjective, close, quiet, soft)
1
dumb(quiet, soft, still, silent, hushed)
1
hushed(adjective, close, quiet, soft, low)
1
mute(quiet, soft, low, still, silent)
1
not forthcoming(expression, quiet, shy, silent)
1
not talkative(expression, adjective, close, quiet, soft)
1
quiet(soft, low, still, shy, silent)
1
reserved(quiet, still, shy, silent, hushed)
1
secretive(quiet, shy, silent)
1
still(quiet, soft, low, silent, hushed)
1
taciturn(quiet, still, silent, hushed, soundless)
1
tongue-tied(quiet, still, shy, silent, hushed)
1
unsociable(quiet, still, shy, silent, hushed)
1
unspeaking(adjective, close, quiet, restrained, still)
1
wordless(adjective, close, quiet, soft, low)
1
zipped(quiet, still, shy, silent, hushed)
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APASmart Define. (2013). nonvocal thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/nonvocal/thesaurus/synonyms
ChicagoSmart Define. 2013. "nonvocal thesaurus" https://smartdefine.org/nonvocal/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2013, nonvocal thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/nonvocal/thesaurus/synonyms>.
MLASmart Define. "nonvocal thesaurus" 28 June 2013. Web. 30 September 2026. <https://smartdefine.org/nonvocal/thesaurus/synonyms>