This is the 1944th most frequent Japanese word.
驚く
To be surprised or astonished.
驚く is used to express personal surprise or astonishment.
そのニュースに驚いた。
I was surprised by the news.
驚く is used in its passive form to indicate being amazed by something.
彼女の歌唱力には驚かされた。
I was amazed by her singing ability.
驚く is used to indicate the level of surprise or amazement experienced by others.