The old boy cocked a speculative eye at him.

That's entirely speculative of course and moreover, it's a priori untestable.

a speculative mind is an invaluable asset to the analytic man.

There are more speculative possibilities of particles not known to exist, but that can be concocted some way or other.

The notion that the prenatal transmission of PTSD risk is adaptive is still speculative, but I find it rather poignant.

Dark energy would probably be harder to understand, but there are some speculative theories out there that might point the way.

For every locked chest, there is both a key and a lock pick, and the history of keister draws us into this world of petty crime and speculative etymology.

One has to be very speculative, and many of my colleagues would say that we should not do this speculation, that we should simply keep our counsel until we know more.

We've been surrounded by images of space our whole lives, from the speculative images of science fiction to the inspirational visions of artists to the increasingly beautiful pictures made possible by complex technologies.

Meanwhile, two speculative bubbles in the real estate market and in mortgages have become grafted upon each other and now dominate economic activity in the US. A crash, or at least a sharp spasm, is quite likely in the near future, and the consequences for America and the world may be catastrophic.

The stakes are much clearer than they usually are in these types of battles. Mittal has an obvious interest in gaining control of Arcelor in order to improve its global geographic balance, boost its market share in high end steel products, and reduce its vulnerability to the speculative jolts that occur in the raw steel market.