Vague

From Middle French vague, from Latin vagus ("wandering, rambling, strolling, fig. uncertain, vague").

Full definition of vague

1921, Bertrand Russell, S:The Analysis of Mind/Lecture IX, It follows from what has been said that a vague thought has more likelihood of being true than a precise one. To try and hit an object with a vague thought is like trying to hit the bull's eye with a lump of putty: when the putty reaches the target, it flattens out all over it, and probably covers the bull's eye along with the rest. To try and hit an object with a precise thought is like trying to hit the bull's eye with a bullet. The advantage of the precise thought is that it distinguishes between the bull's eye and the rest of the target.
2004: Chris Wallace (journalist), Character: Profiles in Presidential CourageThroughout the first week of his presidency, Dulles and Bissell continued to brief Kennedy on their strategy for Cuba, but the men were vague and their meetings offered little in the way of hard facts.

Not having a precise meaning.
a vague term of abuse
Not clearly defined, grasped, or understood; indistinct; slight.
only a vague notion of whatâ€™s needed; a vague hint of a thickening waistline; I havenâ€™t the vaguest idea.
Not clearly felt or sensed; somewhat subconscious.
a vague longing
Not thinking or expressing oneâ€™s thoughts clearly or precisely.
Lacking expression; vacant.
Not sharply outlined; hazy.

1922, Michael Arlen, â€œPiracyâ€: A Romantic Chronicle of These Days Chapter Ep./1/2, He walked. To the corner of Hamilton Place and Picadilly, and there stayed for a while, for it is a romantic station by night. The vague and careless rain looked like threads of gossamer silver passing across the light of the arc-lamps.

(plural vagues)