vacuous Meaning, Definition & Usage

  1. adjective satellite devoid of intelligence
    mindless; inane; fatuous; asinine.
  2. adjective satellite devoid of significance or point
    empty; hollow.
    • empty promises
    • a hollow victory
    • vacuous comments
  3. adjective satellite devoid of matter
    • a vacuous space
  4. adjective satellite void of expression
    blank.
    • a blank stare

WordNet

Vac"u*ous adjective
Etymology
L. vacuus. See Vacant.
Definitions
  1. Empty; unfilled; void; vacant.
    Boundless the deep, because I am who fill Infinitude; nor vacuous the space. Milton.
    That the few may lead selfish and vacuous days. J. Morley.

Webster 1913