absolutely certain

One thing was absolutely certain; they had to have more land.

And, come to think of it, you seem to want everyone to be absolutely certain.

I'm not absolutely certain, you see, as to whether I should say it.

"You can't be absolutely certain of the next three years."

Since that time a happy end seemed absolutely certain to him.

I'm not absolutely certain, but there must be others you can talk to.

I want to make absolutely certain of a few things.

The only absolutely certain thing in this life is death.

He was absolutely certain of what would happen within the next half hour.

I can't be absolutely certain, but who ever is about anything?