- 1to become calmer or less noisy; to make someone or something calmer or less noisy synonym calm (somebody) down
- 2 quiet (down) The demonstrators quieted down when the police arrived. quiet somebody/something (down) He's very good at quieting the kids.
NAmE//ˈkwaɪət//[intransitive, transitive]Verb Forms present simple I / you / we / they quiet
he / she / it quiets
past simple quieted
-ing form quieting