気がつく

Meaning

1. expv5k
   to notice; to realize; to realise; to become aware (of); to perceive; to sense; to suspect
2. expv5k
   to be attentive; to be scrupulous; to be observant
3. expv5k
   to regain consciousness; to come to (one's senses); to come round

Example sentences

• 自分ができそこないであると気が付いたまま生きていくのは辛いことだ。

  It's hard to live with the knowledge that you are a failure.

• 「ここって・・・蝉の声が東京と違う」「あらまっ、よく気がついたこと。貴女、良い音感してるわよ」

  "Here ... the sound of the cicadas is different." "Oh my, I'm impressed you noticed. You've got a good sense of pitch!"

• 列車に乗車した後で、私は財布を家に置き忘れてきたことに気が付いた。

  After I got on board a train, I found I had left my wallet behind at home.