Example : The children shut up when their father approached.

Synonyms : be quiet, belt up, button up, clam up, close up, dummy up, keep mum

Example : The parents locked her daughter up for the weekend.
She locked her jewels in the safe.

Synonyms : lock, lock away, lock in, lock up, put away, shut away

Example : Please silence the children in the church!.

Synonyms : hush, hush up, quieten, silence, still

Synonyms : pent