2
gag(verb, stop, calm, dull, quiet)
2
hold it down(verb, expression, idiom, phrasal verb, stop)
2
hush-hush(verb, calm, dull, quiet, suppress)
2
keep it down(verb, expression, idiom, phrasal verb, calm)
2
lull(verb, calm, dull, quiet, suppress)
2
muffle(verb, stop, calm, dull, quiet)
2
muzzle(verb, stop, calm, dull, quiet)
2
overawe(verb, calm, dull, quiet, suppress)
2
pipe down(verb, expression, phrasal verb, calm, dull)
2
quiet down(verb, expression, phrasal verb, calm, dull)
2
quieten(verb, calm, dull, quiet, suppress)
2
say nothing(verb, expression, calm, dull, quiet)
2
silence(verb, stop, calm, dull, quiet)
2
sit on(verb, expression, phrasal verb, stop, calm)
2
soft-pedal(verb, calm, dull, quiet, suppress)
2
squash(verb, stop, calm, restrain, curb)
2
squelch(verb, stop, calm, dull, quiet)
2
still(verb, calm, dull, quiet, suppress)
2
stop(verb, restrain, curb, suppress, prevent)
2
strike dumb(verb, expression, calm, dull, quiet)
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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>