belt up
• be quiet.
• "for God's sake, belt up"
Similar:
be quiet,
be silent,
fall silent,
hush,
stop talking,
hold your tongue,
keep your lips sealed,
shut up,
shut your face,
shut your mouth,
shut your trap,
button your lip,
pipe down,
cut the cackle,
put a sock in it,
give it a rest,
quieten down,
quiet down,
shut your gob,
wrap it up,
wrap up,
save it,
can it,
Opposite:
speak up,
• put on a seat belt.
• "drivers and adult passengers who fail to belt up can expect to receive a fixed penalty ticket"
