South Africa, a young and improving side, were a far tougher proposition.

In some ways, a man is a tougher proposition than a piece of steel.

I'm afraid this is going to be a tough proposition,' she began at once.

From a practical standpoint, this thing is a tough proposition.

Hitting in general has been a tough proposition for the Mariners.

Now, though he doesn't know it, he's up against a tough proposition.

That would be a tough proposition because of the teachers' union's considerable influence in Albany.

"I understand you're up against a pretty tough proposition."

Until we become a union, it's a really tough proposition.

The numbers make that look like a tough proposition.