cover-up
US /ˈkʌv.ər.ʌp/
UK /ˈkʌv.ər.ʌp/

1.
dissimulation, camouflage
an attempt to prevent the public from discovering information about a serious crime or mistake
:
•
The government was accused of a massive cover-up.
Le gouvernement a été accusé d'une énorme dissimulation.
•
There were rumors of a police cover-up regarding the incident.
Il y avait des rumeurs de dissimulation policière concernant l'incident.