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hush someone up
1. to make someone quiet. Please hush the children up. I have a telephone call. Hush up those kids!
2. Sl. to kill someone. The gang was afraid the witness would testify and wanted to hush him up. Mr. Big told Sam to hush up Richard.
hush something up
Fig. to keep something a secret; to try to stop a rumor from spreading. We just couldn't hush it up. We wanted to hush up the story, but there was no way to do it.
to be quiet; to get quiet; to stop talking. You talk too much. Hush up! I want you to hush up and sit down!
Keep from public knowledge, suppress mention of. For example, They tried to hush up the damaging details. [First half of 1600s]
1. To stop talking; become quiet: The crowd hushed up as the speaker approached the podium. Hush up—you'll wake the baby!
2. To make someone stop talking or become quiet: The guards hushed up the prisoners. Please hush the kids up—I've got a headache.
3. To prevent something from being talked about; keep something from public knowledge: The government acted quickly to hush up the scandal. The editor hushed the news story up.