勢い (Ikioi) is a Japanese noun meaning “force, vigor, vigour, energy”.
Meanings
- nounforce; vigor; vigour; energy; spirit; life
- nouninfluence; authority; power; might
- nounimpetus; impulse; momentum; course (of events)
- adverbnaturally; necessarily; inevitably
Examples
台風が勢いを増した。
The typhoon gathered strength.
勢いが弱まってきたね。
It's abating.
台風の勢いはおとろえた。
The typhoon has lost its power.
Sentences from Tatoeba (CC BY 2.0 FR).