Even so, their death would have been certain in time.

What she was certain in her heart and soul he had not done!

For it was best to be quite certain, in a case like this.

You can be certain in the dark by feeling the ground.

He'd never been so certain of anything in his life.

Nor was it even certain they had been involved in any way.

She had never been so certain of anything in her life.

There's an old saying that nothing is certain in life but death and taxes.

What would happen was by no means certain in 1216.

And yet, as he more than anyone knew, nothing was ever certain in life.