Cover-up
(重定向自Coverup)
A cover-up is an attempt, whether successful or not, to conceal evidence of wrongdoing, error, incompetence or other embarrassing information. In a passive cover-up, information is simply not provided; in an active cover-up, deception is used.
The expression is usually applied to people in positions of authority, such as police, who abuse their power to avoid or silence criticism or to deflect guilt of wrongdoing. Those who initiate a cover-up (or their allies) may be responsible for a misdeed, a breach of trust or duty, or a crime.