Vague, a. [Compar. Vaguer; superl. Vaguest.]
Etymology: [F. vague, or L. vagus. See Vague, v. i.]
1. Wandering; vagrant; vagabond. [Archaic] "To set upon the vague villains." Hayward. She danced along with vague, regardless eyes. Keats.
2. Unsettled; unfixed; undetermined; indefinite; ambiguous; as, a vague idea; a vague proposition. This faith is neither a mere fantasy of future glory, nor a vague ebullition of feeling. I. Taylor. The poet turned away, and gave himself up to a sort of vague revery, which he called thought. Hawthorne.
3. Proceeding from no known authority; unauthenticated; uncertain; flying; as, a vague report. Some legend strange and value. Longfellow. Vague year. See Sothiac year, under Sothiac.
Syn. -- Unsettled; indefinite; unfixed; ill-defined; ambiguous; hazy; loose; lax; uncertain.
3 other Webster entries under this spelling
Vague, n.
An indefinite expanse. [R.] The gray vague of unsympathizing sea. Lowell.
Vague, v. i.
To wander; to roam; to stray. [Obs.] "[The soul] doth vague and wander." Holland.
Vague, n.
A wandering; a vagary. [Obs.] Holinshed.
Shades of meaning
Fernald lists vague only as an antonym, under clear.
He lists it without comment; the entries above explain its neighbors.