not feeling very well 英語で:

I'm not going out tonight, I feel a bit under the weather.

I'm feeling a bit under the weather today, so I think I'll stay home.

He was feeling a little under the weather.

not feel very well: "I'm feeling a bit under the weather at the moment."

He was just feeling under the weather, not ill enough to go to the doctor.

My boss has been under the weather all week and has not come to work during that time.

You look a bit under the weather.

I was under the weather an entire last week.