2
suppress(verb, stop, calm, dull, quiet)
2
tongue-tie(verb, calm, dull, quiet, suppress)
1
Hush up(verb, expression, phrasal verb, interjection, stop)
1
abstain(verb, keep, suppress, refuse, deny)
1
allay(verb, calm, subdue, relax, satisfy)
1
ameliorate(verb, calm, subdue, relax, satisfy)
1
appease(verb, calm, subdue, relax, satisfy)
1
asphyxiate(verb, stop, restrain, curb, suppress)
1
assuage(verb, calm, subdue, relax, satisfy)
1
becalm(verb, calm, subdue, relax, satisfy)
1
black out(verb, expression, phrasal verb, stop, restrain)
1
bridle(verb, keep, suppress, refuse, deny)
1
bring to screeching halt(verb, expression, idiom, stop, restrain)
1
burke(verb, stop, close, restrain, curb)
1
calm(verb, dull, quiet, subdue, relax)
1
calm down(verb, expression, phrasal verb, calm, dull)
1
can it(verb, expression, phrasal verb, calm, quiet)
1
check(verb, stop, keep, restrain, curb)
1
choke back(verb, expression, phrasal verb, stop, restrain)
1
clammed up(expression, close, quiet, gag, quieten)
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APASmart Define. (2015). clam up thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/clam_up/thesaurus/synonyms
ChicagoSmart Define. 2015. "clam up thesaurus" https://smartdefine.org/clam_up/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, clam up thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/clam_up/thesaurus/synonyms>.
MLASmart Define. "clam up thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/clam_up/thesaurus/synonyms>