"An extremely unlikely proposition," he said.

One of the many unlikely propositions I have sold in a lifetime of selling was based on that idea.

This is only one of several "stretchers" enshrined on the marker, including the unlikely proposition that the tree was a favorite "trysting place" for lovers.

For a while there was silence, as though it took time to understand such an unlikely proposition, and then another voice, sharper and more alive.

On the face of it, this would seem an unlikely proposition.

It is closely related to credulity, which is the tendency to believe unlikely propositions that are unsupported by evidence.

His aides say that savings from other Medicare cuts could cover the tab, an unlikely proposition that Mr. Bush will need to document.

Yes, it was indeed a far-fetched and unlikely proposition, and yet I could not be at rest until I had made sure if it might, indeed, be so.

And my only chance to see the ship will be if the General calls for me, he thought, an unlikely proposition.

That might have seemed an unlikely proposition earlier this season.