7
shut up(verb, expression, phrasal verb, interjection, stop)
6
button up(verb, expression, phrasal verb)
6
close up(verb, expression, phrasal verb, calm, dull)
5
dummy up(verb, expression, phrasal verb, calm, dull)
4
shush(verb, interjection, calm, dull, quiet)
3
be quiet(verb, quiet, still, silence)
3
belt up(verb, interjection)
3
hush(verb, interjection, stop, calm, dull)
3
quiet(verb, interjection, calm, dull, suppress)
2
choke(verb, stop, calm, quiet, restrain)
2
choke off(verb, expression, phrasal verb, calm, dull)
2
clam(verb, calm, dull, quiet, suppress)
2
cool it(verb, expression, phrasal verb, calm, dull)
2
cut off(verb, expression, phrasal verb, calm, dull)
2
cut short(verb, expression, calm, dull, quiet)
2
decrease the volume(verb, expression, idiom, calm, dull)
2
dry up(verb, expression, phrasal verb, stop, calm)
2
dull(verb, calm, quiet, suppress, subdue)
2
dumb(verb, calm, dull, quiet, suppress)
2
extinguish(verb, stop, calm, dull, quiet)
<1234510>
11 years ago|1.2k views|share |citing 
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>