63 entries under quiet topic. ×

17
reserved(adjective, close, soft, low)
17
reticent(adjective, close, soft, low)
15
taciturn(adjective, close, soft, low)
13
mum(adjective, restrained, aloof, reserved)
13
secretive(adjective, close, soft, low)
12
silent(adjective, close, soft, low)
11
uncommunicative(adjective, close, soft, low)
10
close(adjective, soft, severe, low)
10
mute(adjective, close, soft, low)
7
close-mouthed(adjective, close, soft, low)
6
closemouthed(adjective, shy, reserved, secret)
6
dumb(adjective, close, soft, low)
5
speechless(adjective, close, soft, low)
5
unforthcoming(adjective, restrained, aloof, reserved)
4
buttoned up(expression, adjective, close, soft)
4
close-lipped(adjective, reserved, secret, private)
4
tongue-tied(adjective, shy, reticent, silent)
4
wordless(adjective, silent, dazed, dumb)
3
restrained(adjective, soft, low, reticent)
3
retired(adjective, reserved, secret, private)
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APASmart Define. (2015). tight-lipped thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/tight-lipped/thesaurus/synonyms
ChicagoSmart Define. 2015. "tight-lipped thesaurus" https://smartdefine.org/tight-lipped/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, tight-lipped thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/tight-lipped/thesaurus/synonyms>.
MLASmart Define. "tight-lipped thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/tight-lipped/thesaurus/synonyms>