expression, godan verb (-ru)
have excess momentum; overshoot due to force/speed
Physical or literal sense: moving too fast or using too much force, causing an unintended result. Often used in the 〜て form (勢い余って).
勢い余って壁にぶつかった。
I had too much momentum and crashed into the wall.
勢い余ってボールを遠くに投げすぎた。
I put too much force into it and threw the ball way too far.
expression, godan verb (-ru)
get carried away; go overboard; overdo
Figurative sense: getting emotionally carried away or overdoing something due to excitement or momentum. Also commonly used in the 〜て form.
勢い余って言い過ぎてしまった。
I got carried away and said too much.
勢い余って買い物をしすぎた。
I went overboard and bought too much stuff.