lapse in judgment
An error or deviation in judgment; a mistake, especially when one should have known better. Look, I'm sorry, I know I shouldn't have left the bags unattended. I was just stressed out and had a momentary lapse of judgment! You're a good worker, Tonya, but this lapse in judgment is not something we can overlook.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.