keep an act up
keep the act up
To maintain a façade or false set of behaviors in order to deceive people. Other words can be used between "keep" and "act." The company has kept the act up for so long that I think even they believe their own story at this point. I'm tired of keeping this act up. I just want to tell the world the truth about our relationship! Audiences are left at the end of each episode wondering how much longer the villain can keep her act up before her true colors emerge.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
keep an act upand keep one's act up
to maintain behavior that is a false show; to continue with one's facade. (The an can be replaced with the, this, that, etc.) How long do I have to keep this act up? I am tired of fooling people. I am weary of keeping up my act.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.