1
breathless
1
brooding(aloof, reserved, reticent, uncommunicative)
1
brusque
1
buttoning up(expression, adjective, quiet, reserved, secret)
1
cagey(quiet, restrained, mysterious, private, reticent)
1
callous(adjective, indifferent, detached, distant, apathetic)
1
can't say boo to a goose(adjective, calm, quiet, humble)
1
cartoon
1
cataleptic
1
catlike(adjective, sneak, skulking)
1
chiller
1
cinema
1
clamming up(expression, adjective, quiet, reserved, secret)
1
close-tongued
1
closed(adjective, calm, quiet, smooth, tranquil)
1
cold(adjective, quiet, indifferent, detached, unfriendly)
1
compact
1
constant
1
continual
1
controlled
10 years ago|21k views|share |citing 
APASmart Define. (2016). silent thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/silent/thesaurus/synonyms
ChicagoSmart Define. 2016. "silent thesaurus" https://smartdefine.org/silent/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, silent thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/silent/thesaurus/synonyms>.
MLASmart Define. "silent thesaurus" 3 April 2016. Web. 23 September 2026. <https://smartdefine.org/silent/thesaurus/synonyms>