It’s all but impossible.
He is utterly impossible.
He is impossible to beat.
It’s impossible to go out now.
I’m sorry, but it’s impossible.
It is impossible for me to do so.
It is impossible that he is busy.
His writing is impossible to read.
It is impossible for him to do it.
He looked on the plan as impossible.
It’s impossible to get there by noon.
We thought it impossible to stop him.
I found it impossible to lift the box.
It’s impossible that she knew about it.
Victory is unlikely but not impossible.
We found it impossible to persuade him.
It is impossible to live without water.
He found it impossible to lift the lid.
It is impossible to account for tastes.
I found it impossible to cross the road.
It is impossible to read her handwriting.
He is always trying to do the impossible.
It was impossible to find an answer.
It is next to impossible to go to school.
I think it impossible for us to beat him.