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intransitive verb
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Synonyms
clam up, dry up, dummy up, hush, pipe down, quiet (down), shut up
Antonyms
speak, talk
1949, in the meaning defined above
More from Merriam-Webster on belt up
Rhyming Dictionary: Words that rhyme with belt up
Thesaurus: All synonyms and antonyms for belt up
See Definitions and Examples
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