quietens
v.
（使）安静( quieten的第三人称单数 );
（使）平静;
（使）平息;
（使）（感情）减轻;
例句:
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A silencer quietens the noise of the engine.
消声器把发动机的噪音消弭了.
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A gentle answer quietens anger.
婉言释怒.
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The mention of Smith's name quietens him.
来自THETIMES
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Slowly, the Carrbridge village hall quietens.
来自THETIMES
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It is only when his mother tries answering his sounds using low and soft tones that he quietens down.
来自THETIMES