Vacuous (văk&uuptack_;ŭs), a. [L. vacuus. See Vacant.] Empty; unfilled; void; vacant.
[1913 Webster]

Boundless the deep, because I am who fill
Infinitude; nor vacuous the space. Milton.
[1913 Webster]

That the few may lead selfish and vacuous days. J. Morley.
[1913 Webster]