From Longman Dictionary of Contemporary Englishhush moneyˈhush ˌmoney noun [uncountable] MONEYmoney that is paid to someone not to tell other people about something embarrassing
Examples from the Corpus
hush money• Recently released from prison, Hubbell is once again under investigation by Starr, this time for allegedly accepting hush money.From Longman Business Dictionaryhush moneyˈhush ˌmoney money paid to someone to prevent them from telling other people about something embarrassing or dishonestIt was the start of an elaborate plan to get hush money from his employer. → money 