Long term Zulu success against a major world power however was a questionable proposition.

This rests on two questionable propositions about the nature and effectiveness of such a retaliatory deterrence policy.

Of some questionable proposition in (was it) the civil service?

Now, it happens that is a very controversial and highly questionable economic proposition.

How did health care legislation - widely described as the major social innovation of the decade - turn from a pretty sure bet into a questionable proposition?

That's a questionable proposition to start with.

The study suggests that using small craters to estimate surface age is a questionable proposition, on Europa and perhaps elsewhere in the solar system.

The stare was part of Thurland's technique toward withering the wrong people when they put forth such questionable propositions.

The other brow went up, making her look just like Jamie, presented with some highly questionable proposition.

It seems a questionable proposition to allow one man's vision, opinion, to shape policy.