It's certainly a day to consider the more unobvious possibilities.

It is completely unobvious territory for a TV programme.

But the flaw in the foundations is sufficiently unobvious that generations of very clever people were able to overlook it.

In other words, he beats all other poets, ancient and modern, in constructing metaphors upon the most subtile, delicate, and unobvious analogies.

Though he carried the motion through, the letter remained in one piece, in one hand, having passed through the other hand in some unobvious fashion.

Besides, in those golden times of Indian delinquency, the arrival of a wealthy relative from the East was no very unobvious ingredient in a story.