shut up

verbs

refuse to talk or stop talking; fall silent
"The children shut up when their father approached"
be quiet, belt up, button up, clam up, close up, dummy up, keep mum, shut up
place in a place where something cannot be removed or someone cannot escape
"The parents locked her daughter up for the weekend"; "She locked her jewels in the safe"
lock, lock away, lock in, lock up, put away, shut away, shut up
cause to be quiet or not talk
"Please silence the children in the church!"
hush, hush up, quieten, shut up, silence, still

adjectives

closely confined
pent, shut up