sweep something under the carpet

Từ điển Oxford Advanced Learner 8th

sweep sth under the ˈcarpet idiom
(US also sweep sth under the ˈrug)to try to stop people from finding out about sth wrong, illegal, embarrassing, etc. that has happened or that you have done
•An earlier report, implicating the government, had been conveniently swept under the carpet.
see roar, romp, sweep, etc. to victory at ↑victory _n.
Main entry: ↑sweep_idiom