not in use (adjective) vacant: empty; unoccupied
Detalii: vacant pertains mainly to things (vacant house) while vacuous pertains mainly to the absence or near absence of meaning or intelligence (vacuous expression)
Sinonime: angular, aslant, athwart, awry, contrariwise, crisscross, cross, crossing, crossways, diagonally, horizontally, longways, mullioned, over, perpendicular, sideways, thwart, transversal, transverse, transversely, traverse, vertically
Antonime: head on, lengthwise, straight on