cover-up
/ˈkʌvərʌp/noun
1
- an attempt to prevent people discovering the truth about a serious mistake or crime（对严重错误或罪行的）掩盖; 掩饰。
2
- a loose outer garment, as worn over a swimsuit or exercise outfit（穿在泳装或运动服外面的）罩袍, 罩衫。