Main entry: hush, hush up, still, shut up, silence, quieten
Definition: cause to be quiet or not talk
Usage: Please silence the children in the church!
Antonyms: louden
Definition: cause to become loud
Main entry: keep mum, dummy up, belt up, be quiet, shut up, clam up, close up, button up
Definition: refuse to talk or stop talking; fall silent
Usage: The children shut up when their father approached
Antonyms: open up
Definition: talk freely and without inhibition
Main entry: shut up, pent
Definition: closely confined
Antonyms: unconfined
Definition: not confined
Antonyms: invasive
Definition: marked by a tendency to spread especially into healthy tissue