1. Not clearly expressed; inexplicit.
2. Lacking definite shape, form, or character.
3. Not clear in meaning or application.
4. Indistinctly felt, perceived, understood, or recalled; hazy.
Why should the definition of vagueness be only negative?
The problem is of course that vagueness resists thorough analysis. So, how relevant can vagueness be?
I propose to show that vagueness can have a function and a purpose; that it can even be vital in certain circumstances.
Not only can vagueness be relevant, it can be a condition for greater relevancy.