ill-defined

But according to Wyden, the bill is “full of holes, riddled with vagueness and ill-defined terms.”

“Natural-born citizen” is an ill-defined term that has not been used in a statute since 1790.

In the distance behind Gommecourt there is some ill-defined rising ground forming gullies and ravines.

I doubt if Kirby even glanced toward me, although if he did he saw only an ill-defined figure, with no glimpse of my face.