hush money
US /ˈhʌʃ ˌmʌn.i/
UK /ˈhʌʃ ˌmʌn.i/

1.
money paid to someone to prevent them from revealing embarrassing or damaging information
:
•
The politician was accused of paying hush money to cover up the scandal.
•
Paying hush money is illegal and unethical.