What does ikr mean on chat?

"IKR" is an acronym that stands for "I know, right?" It's used in online chat and text messaging to express agreement with something that someone else has said, often in a surprised or enthusiastic way.

For example:

* Person 1: "This movie is so good!"

* Person 2: "IKR! I can't believe I waited so long to watch it."

It's a casual way to show that you share the same opinion or feeling.