Keep-down definitions

China keeps down her dissidents very efficiently.

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To restrain or control (a sound).

We must keep the noise down, or the neighbours will complain.

Keep it down in there! Some of us are trying to sleep!

verb
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To cause not to increase or rise.

It is essential to keep the numbers down to avoid overcrowding.

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Not to vomit.

It is difficult to keep anything down when you have the flu.

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(intransitive) To lie low. To stay concealed by not standing up.

You had better keep down or they will see you.

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