be silent
Definitions
To refrain from speaking or making any sound.
To become quiet or cease communication.
Examples
The teacher asked the students to be silent while she explained the instructions.
It is often wise to be silent when you are angry to avoid saying something you might regret.
Synonyms
keep quiet hold one's tongue stay mute hush remain speechless button one's lip
Antonyms
speak out make noise break one's silence talk chatter voice one's opinion