all the while

all the while

As something previously mentioned was happening. Typically used to highlight lies or deception. Yeah, I dated Gavin last summer. And all the while, he was secretly seeing Becca, so no, I don't trust him. Yeah, she's been working for us, and all the while, she's been sneaking off with our top-secret records! Why can't you see that?
See also: all, while
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.