having no contents; empty; void

a vacant niche.

having no occupant; unoccupied

no vacant seats on this train.

not in use

a vacant room.

devoid of thought or reflection

a vacant mind.

characterized by, showing, or proceeding from lack of thought or intelligence

a vacant answer; a vacant expression on a face.

not occupied by an incumbent, official, or the like, as a benefice or office.

free from work, business, activity, etc.

vacant hours.

characterized by or proceeding from absence of occupation

a vacant life.

devoid or destitute (often fol. by of )

He was vacant of human sympathy.

Law .

having no tenant and devoid of furniture, fixtures, etc. ( distinguished from unoccupied )

a vacant house.

idle or unutilized; open to any claimant, as land.

without an incumbent; having no heir or claimant; abandoned

a vacant estate.

adjective

full , occupied , overflowing , aware , cognizant , comprehending , filled

adjective

abandoned , available , bare , clear , deserted , devoid , disengaged , free , idle , not in use , stark , tenantless , to let , unemployed , unengaged , unfilled , uninhabited , unlived in , untaken , untenanted , unused , void , without contentsnotes:vacant pertains mainly to things (vacant house) while vacuous pertains mainly to the absence or near absence of meaning or intelligence (vacuous expression) , abstracted , blank , daydreaming , deadpan , dreaming , dreamy , empty-headed * , foolish , inane , incurious , inexpressive , silly , stupid , thoughtless , unexpressive , unintelligent , unthinking , vacuous , vapid , witlessnotes:vacant pertains mainly to things (vacant house) while vacuous pertains mainly to the absence or near absence of meaning or intelligence (vacuous expression) , inactive , empty , empty-headed , hollow , otiose , vain , absent , barren , expressionless , leisure , open , unoccupied , wanting