The quality of being overeager; excessive readiness or enthusiasm.(noun)
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Use "overeagerness" in a sentence
"a spirit of "overeagerness" to ride the wave of what they saw as a more lucrative crop."
"It was a painful blow for Parker, though there was a legitimate case that it was more to do with overeagerness than genuine malice and Rooney's thoughts would probably have been better kept to himself in light of Liverpool's visit to Old Trafford on Saturday."
"Part of the problem has been the overeagerness of McDonald's franchisees to start selling Smoothies."