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.”

Synonyms: ambiguous, equivocal, ambiguous, equivocal, indistinct, obscure, dazed, erratic