Synonyms|50Antonyms|1|Broader|0Narrower|0Related|9
7
shut up(verb, expression, phrasal verb, interjection, quieten)
4
be quiet
4
clam up(verb, interjection)
4
close up
3
button up
3
dummy up
3
hush
1
Shush
1
keep mum
1
quieten down(verb, expression, phrasal verb, quieten)
1
silence
0
Button your lip
0
Hold your tongue
0
Hush up
0
Mum's the word
0
Quiet
0
Shut your face
0
Shut your gob
0
Shut your trap
0
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APASmart Define. (2015). belt up thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/belt_up/thesaurus/synonyms
ChicagoSmart Define. 2015. "belt up thesaurus" https://smartdefine.org/belt_up/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, belt up thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/belt_up/thesaurus/synonyms>.
MLASmart Define. "belt up thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/belt_up/thesaurus/synonyms>