49 entries under uncommunicative topic. ×

1
sparing(aloof, reserved, reticent)
1
speechless(adjective, close, quiet, soft, low)
1
tongue-tied(quiet, still, shy, reticent, silent)
1
undercover(mysterious, private, reticent, taciturn)
1
unexpressive(aloof, reserved, reticent)
1
unforthcoming(quiet, restrained, aloof, reserved, reticent)
1
withdrawn(aloof, reserved, mysterious, private, reticent)
0
introverted(reserved, reticent)
0
under cover(expression, unknowing, taciturn, hermetical)
<123>
13 years ago|1.6k views|share |citing 
APASmart Define. (2013). clammed up thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/clammed_up/thesaurus/synonyms
ChicagoSmart Define. 2013. "clammed up thesaurus" https://smartdefine.org/clammed_up/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2013, clammed up thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/clammed_up/thesaurus/synonyms>.
MLASmart Define. "clammed up thesaurus" 18 May 2013. Web. 25 September 2026. <https://smartdefine.org/clammed_up/thesaurus/synonyms>