problematic

Whether this man is identical with the author or patron of our book is problematic.

But Denby paid no sort of attention to these problematic followers.

In neither of these cases, then, is there a problematic object.

But let us not be disturbed by this problematic entrance to our studies.

The existence of these grandchildren lay then in the problematic future.

Thought must be reserved for the new, the precarious, the problematic.

The problematic two hundred thousand was neither here nor there, nor anywhere.

If Martin saw Tenney, he was not going to linger for any problematic issue.

It had begun as a chemise, but what it would end in was problematic.

He could offer her nothing but his shabby self, his problematic future.