1.
vigorously; forcefully; with great energy; with momentum
Doing something with strong force, speed, or enthusiasm. Describes energetic, dynamic movement or action.
水が勢いよく流れている。
Water is flowing vigorously.
子どもたちが勢いよく走り出した。
The children dashed out with great energy.
ドアを勢いよく開けたら、壁にぶつかってしまった。
I opened the door forcefully and it slammed into the wall.
The adverbial form of 勢いがよい (having momentum/force). 勢い is a noun meaning "momentum, force, vigor," and よく is the adverbial form of よい (good). Together they describe an action performed with noticeable force or energy.
COMMON COLLOCATIONS:
- 勢いよく飛び出す — to jump out energetically
- 勢いよく流れる — to flow strongly
- 勢いよく食べる — to eat with gusto
- 勢いよく成長する — to grow vigorously
SIMILAR ADVERBS:
- 激しく — violently, intensely (stronger; implies more extreme force)
- 力強く — powerfully, strongly (focuses on strength)
- 元気よく — cheerfully, energetically (focuses on liveliness rather than physical force)
- 一気に — all at once (focuses on speed and continuity rather than force)