noun
overeagerness; rashness; jumping the gun
Describes acting too hastily out of enthusiasm, often leading to a mistake or failure. Common in everyday language.
彼の勇み足でプロジェクトが失敗した。
His overeagerness caused the project to fail.
勇み足で契約を急いだら
We rushed into the contract out of overeagerness and later found problems.
noun
forward step-out
Sumo term: a winning move where the opponent steps out of the ring first, but the winner's own momentum carries them out as well, resulting in a loss.
横綱は勇み足で金星を逃した。
The yokozuna lost by a forward step-out and missed a kinboshi.