qui·et·en/`kwaɪətṇ; ˈkwaɪətn/ BrE 【英】, quietAmE 【美】 v [T] to make someone or something quiet 使平静; 使安静: His appeal for calm failed to quieten the protesters. 他呼吁大家保持冷静，但未能使抗议者平静下来。
quieten down to become quiet, or make someone quiet （使）平静下来; （使）安静下来: After a while the children quietened down. 过了一会儿，孩子们便安静下来。