Adjective: vacuous va-kyoo-us
- Devoid of intelligence or thought
"a vacuous mind";
- mindless, vacant
- Devoid of significance or force
"vacuous comments";
- empty, hollow
- Devoid of matter
"a vacuous space"
See also: daft [Brit, informal], dumb, empty, foolish, imbecile, imbecilic, meaningless, nonmeaningful, stupid
Encyclopedia: Vacuous