쎄~하다

쎄~하다,  영어로?

It's a little suspicious that he is late .. ? 그가 늦은게 좀 쎄 한데....?

That's suspicious how quiet it is ....  조용한게 뭔가 쎄 한데....

The air is heavy.

The atmosphere is heavy/ down.

The mood is cold.