Vaguest

adjective

1. Not clearly expressed; stated in indefinite terms.
2. Not having a precise meaning.

   "a vague term of abuse"

3. Not clearly defined, grasped, or understood; indistinct; slight.

   "I haven’t the vaguest idea."

4. Not clearly felt or sensed; somewhat subconscious.

   "a vague longing"

5. Not thinking or expressing one’s thoughts clearly or precisely.