The word "vacuous" in English means: Empty of meaning, substance, or intelligence., Lacking serious purpose or value..
The phonetic transcription of "vacuous" is /ˈvækjʊəs/ in British English and /ˈvækjuəs/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "vacuous": meaningless, blank, shallow, dull, inane, stupid, empty.
Example usage of "vacuous": "His vacuous smile showed he wasn't really listening at all.". More examples on the page.