揭人老底的英文

dig up sb.'s old stories in order to discredit him; disclose sb.'s villainous life; expose a person's fault; reveal sb.'s past; reveal to the world sb.'s evil character; show sb. up

• 揭:    tear off; take off
• 人:    human being; man; ...
• 老底:    sb.'s past; sb.'s ...