I Couldn't Agree With You More

Meaning/Usage: To completely agree with someone

Explanation: This is the highest level of agreeing with someone because they can't agree more than they do. It is straightforward and very common.

"I couldn't agree with you more, this place is beautiful."
"I couldn't agree with you more, spending more time with each other would be nice."
"You didn't like that movie either? I couldn't agree with you more."

A. "I really don't like shopping around the holidays."
B. "I couldn't agree with you more. It's always so busy."

Other Common Sentences

"I totally agree with you."