Vacant

a.	1.
	1.	Deprived of contents; not filled; empty; as, a vacant room. Stuffs out his vacant garments with his form. - Shak. Being of those virtues vacant. - Shak. There is no fireside, howsoe'er defended, But has one vacant chair. - Longfellow.
	2.	Unengaged with business or care; unemployed; unoccupied; disengaged; free; as, vacant hours. Religion is the interest of all; but philosophy of those . . . at leisure, and vacant from the affairs of the world. - Dr. H. More. There was not a minute of the day which he left vacant. - Bp. Fell.
	3.	Not filled or occupied by an incumbent, possessor, or officer; unoccupied; as, a vacant throne; a vacant house; a vacant apartment; a vacant parish. Special dignities which vacant lie For thy best use and wearing. - Shak.
	4.	Empty of thought; thoughtless; not occupied with study or reflection; as, a vacant mind. The duke had a pleasant and vacant face. - Sir H. Wotton. When on my couch I lie In vacant or in pensive mood. - Wordsworth.
	5.	(Law) Abandoned; having no heir, possessor, claimant, or occupier; as, a vacant estate. Vacant succession (Law) one that is claimed by no person, or where all the heirs are unknown, or where all the known heirs to it have renounced it. - Burrill.

Adj.	1.	vacant - void of thought or knowledge; "a vacant mind"
	2.	vacant - without an occupant or incumbent; "the throne is never vacant"

abandoned, absent-minded, available, bland, blankminded, bleached, calm, characterless, clear, deadpan, deserted, devoid, dull, empty-headed, empty-minded, empty-pated, empty-skulled, expressionless, extra, fatuous, featureless, fishy, forsaken, free, glassy, godforsaken, hollow, idle, impassive, inane, incogitant, inexpressive, insipid, jejune, nirvanic, null, null and void, oblivious, open, passive, poker-faced, quietistic, rattlebrained, rattleheaded, relaxed, scatterbrained, spare, stark, tenantless, thoughtfree, thoughtless, tranquil, unaware, uncomprehending, unengaged, unexpressive, unfilled, unideaed, uninhabited, unintellectual, unmanned, unpeopled, unpopulated, unreasoning, unrelieved, unstaffed, untaken, untenanted, untended, unthinking, unused, unutilized, vacuous, vapid, void, white, with nothing inside, without content, wooden