belt up
verb
belted up; belting up; belts up
intransitive verb
British
: shut up
Synonyms
- clam up
- dry up
- dummy up
- hush
- pipe down
- quiet (down)
- shut up
See all Synonyms & Antonyms 
Example Sentences
the schoolboy ordered his mates to belt up about the prank
Word History
First Known Use
1949, in the meaning defined above
belting up
verb
as in drying up
to stop talking the schoolboy ordered his mates to belt up about the prank Synonyms & Similar Words
Relevance
- drying up
- clamming up
- dummying up
- shutting up
- piping down
- hushing
- holding one's peace
- quieting (down)
- holding one's tongue
- cooling (down)
- calming (down)
- settling (down)
- hawing
- hemming
Antonyms & Near Antonyms
- speaking
- talking
- spouting (off)
- talking up
- speaking out
- speaking up
- piping up
- sounding off