VACANT

adj. 1 empty, void, hollow, unoccupied, untenanted, uninhabited, abandoned, deserted The house remained vacant all summer 2 blank, expressionless, deadpan, empty, vacuous, dull, absent-minded, inane, uncomprehending, fatuous, unaware After the accident, she would just sit, for hours on end, with a vacant look on her face 3 unoccupied, free, unused, unutilized, spare, extra, idle, unfilled, unengaged, unspoken for The doctor has a vacant hour tomorrow at ten and could see you then