勘かんが鈍にぶる

expression, godan verb (-ru)

lose one's touch; become less perceptive; get out of practice

Used when someone's intuition, sharpness, or skill becomes dulled, often due to lack of practice or aging.

• 最さい近きん、仕し事ごとを休やすんでいたせいで、勘かんが鈍にぶった気きがする。

  Lately, because I've been off work, I feel like I've lost my touch.

• 年としを取とると、どうしても勘かんが鈍にぶるものだ。

  As you get older, your intuition inevitably becomes less sharp.