Definition of "hush up" [hush up]

• To become quiet; to cease making sounds. (verb)
• To keep secret, to prevent from becoming known. (verb)

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• "And if the townspeople laid the blame at Maigret's door, they obviously thought Etienne Naud was paying him to hush up the truth."
• "Sir Boyvill, only anxious to hush up the matter by which his pride had suffered, hastened to prevent his son from taking steps to re-open the subject."
• "It's a job for the serious fraud people, though Sir Ivan wants to hush up the whole thing and won't call them in, and of course it wouldn't save the brewery if he did."