The Collaborative International Dictionary
Overeager \O`ver*ea"ger\, a. Too eager; too impatient. -- O`ver*ea"ger*ly, adv. -- O"ver*ea"ger*ness, n.
Wiktionary
n. The quality of being overeager; excessive readiness or enthusiasm.
Usage examples of "overeagerness".
He reddened and quickly dropped it on the saddle horn, darting a glance at Yonan to see if his overeagerness for a face-off had been detected.
He had a rounded, pinkish face with babylike features, and a manner that was candid yet genial, inspiring confidence by its suggestion that even if the profession could be guilty of a little overeagerness at times, he had already read this prospective buyer as too astute to be influenced by it.
I threw myself at him again, and an instant later was rewarded for my overeagerness with a hot pain on my foreleg.
I cursed each time I picked myself up, for my overeagerness in the shifting.