To feel off:
Not feeling well.
“To feel off” 在口语中表示一个人 “状态不佳” 或 “感觉不大舒服”。它既可以用来谈论身体状态，也可以用来谈论精神状态。
例句
Fang feels off today and can’t come to work. She is going to work from home.
芳今天不大舒服，不能来办公室上班。她打算在家工作。
I ate too much last night. Now I feel a bit off.
我昨晚吃得太多了。现在感觉有点不舒服。
I feel a bit off today because I had an argument with my wife.
我今天状态不好，因为我和妻子吵架了。
