Not clearly expressed; stated in indefinite terms.
Not having a precise meaning.
a vague term of abuse
Not clearly defined, grasped, or understood; indistinct; slight.
I haven’t the vaguest idea.
Not clearly felt or sensed; somewhat subconscious.
a vague longing
Not thinking or expressing one’s thoughts clearly or precisely.
Lacking expression; vacant.
Not sharply outlined; hazy.
Wandering; vagrant; vagabond.