1
brusque
1
buttoning up(expression, adjective, quiet, reserved, secret)
1
clamming up(expression, adjective, quiet, reserved, secret)
1
classified
1
close-tongued
1
cold(aloof, reserved, reticent, uncommunicative)
1
concise
1
confidential
1
could hear a pin drop(expression, adjective, idiom, close, quiet)
1
distant(aloof, reserved, reticent, taciturn, uncommunicative)
1
dour(aloof, reserved, reticent, uncommunicative)
1
dried-up(aloof, reserved, reticent, uncommunicative)
1
dummied up(expression, quiet, restrained, reticent, discreet)
1
economical of words(expression, idiom)
1
enigmatic(mysterious, private, reticent, taciturn, uncommunicative)
1
feline(mysterious, private, reticent, taciturn, uncommunicative)
1
glum
1
hidden(adjective, quiet, reserved, secret, private)
1
hush-hush(adjective, quiet, reserved, secret, private)
1
hushed(adjective, close, quiet, soft, low)
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APASmart Define. (2015). tight-lipped thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tight-lipped/thesaurus/synonyms
ChicagoSmart Define. 2015. "tight-lipped thesaurus" https://smartdefine.org/tight-lipped/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, tight-lipped thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tight-lipped/thesaurus/synonyms>.
MLASmart Define. "tight-lipped thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/tight-lipped/thesaurus/synonyms>