vacuous   (Sound)

The adj vacuous has 4 senses

• asinine, fatuous, inane, mindless, vacuous -- (devoid of intelligence)


• empty, hollow, vacuous -- (devoid of significance or point; "empty promises"; "a hollow victory"; "vacuous comments")


• vacuous -- (devoid of matter; "a vacuous space")


• blank, vacuous -- (void of expression; "a blank stare")