What is the concrete noun of eager?

There isn't a direct concrete noun for "eager." Here's why:

* Eager is an adjective describing a feeling or state of mind (anticipation, excitement, etc.).

* Concrete nouns refer to physical things you can touch, see, hear, smell, or taste.

To express the idea of eagerness in a concrete way, you could use a phrase or description:

* A look of eagerness

* A gleam of anticipation in their eyes

* The excited chatter of the crowd

* The fidgety movements of someone waiting

Let me know if you have any other questions!