I had to admit that it sounded pretty improbable myself.

But it sounded a little improbable as he said it.

Oh, I know it sounds rather improbable but one has to go into everything.

I know that may sound improbable, but those fellows looked like fast workers.

What sounded improbable to David Duval just several months ago is now very possible.

True, some of his personal history sounds improbable, at best.

That sounds even more improbable than Agassi's run to last year's final.

The number may sound highly improbable, given that a political convention only lasts for four days.

She glanced at Cain, knowing anything she said would sound improbable.

It all sounded so improbable as he related his quest to Gwyneth.