Accommodating these players was a high-risk proposition, and though it appears to be working, the Rockets concede they may never do it again.

This was both a low-risk and a high-risk proposition.

That makes TanDa, in betting terms, a high-risk, high-reward proposition.

But satellite television was a high-risk, high-capital proposition.

It is a high-risk proposition and, possibly, a suicide mission.

The quest for the perfect nude beach is a high-risk proposition.

"I don't consider that a high-risk proposition."

Thanks to the financial crisis, junior gold miners - always a high-risk proposition - are struggling for finance, and many are mothballing young projects.

But unlike, say, private equity investments or hedge funds, it is not a high-risk, high-return proposition.

On the other hand, drilling is a high-risk proposition, and the fact that it didn't produce oil doesn't necessarily make the hypothesis wrong.