nounto cover up, conspire or collude by putting on an act; be in cahoots | typically where sb. puts on a show to distract from someone else's actions in the background—a double act [] [國] 演雙簧; 唱雙簧
noun(slang) to collaborate with a partner in crime on a lie in order to avoid a problem or to trick someone; to put on an act together to try and cover up something