鈍る

にぶる

to become blunt, to grow dull

JLPT N1

Details

Part of Speech:
Godan verb with 'ru' ending, Intransitive verb
Romaji:
niburu

Example Sentences

長い間使っていなかったので、包丁の切れ味が鈍ってしまった。

Because I hadn't used it for a long time, the knife's sharpness had become dull.

集中力が鈍ると、複雑な問題の解決が難しくなる。

When concentration becomes dull, it becomes difficult to solve complex problems.