I couldn't agree more

couldn't agree more

Agree completely. Typically used in the first person (preceded by "I"), but also seen in some third-person constructions. A: "Regardless of what your political views are, we need more civility in our discourse." B: "I couldn't agree more. I'm glad to hear you say that." We've heard what you've had to say, and frankly we couldn't agree more. It's just that we don't have the funding.
See also: agree, more
Farlex Dictionary of Idioms.

I ˌcouldn’t agree (with you) ˈmore

I completely agree (with you): I couldn’t agree with you more about the need to hire extra staff.
See also: agree, more
Farlex Partner Idioms Dictionary
See also:
  • couldn't agree more
  • like talking to a wall
  • hanger-on
  • pond
  • frog in a small pond
  • a big fish in a small pond
  • a big frog in a small pond
  • big fish in a small pond
  • big frog in a small pond
  • change off