Definition of vacuous in English:

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Pronunciation: /ˈvakyo͞oəs/


1Having or showing a lack of thought or intelligence; mindless: a vacuous smile vacuous slogans
More example sentences
  • Choices based on the most minute reasoning but lacking any desire are vacuous.
  • You'll see their vacuous smiles, but their sad eyes will betray how hollow and unhappy they really are.
  • In short, what we have here is a veritable orgy of vacuous generalities and meaningless slogans.
silly, inane, unintelligent, insipid, foolish, stupid, fatuous, idiotic, brainless, witless, vapid, vacant, empty-headed
informal dumb, moronic, brain-dead, fluffy, fluffball
1.1 archaic Empty.
Example sentences
  • A vacuous, empty space is present in almost all locations throughout the film and successfully captures the enormous lack of love Barry feels.
  • On the second floor, I stepped into a vacuous, empty office space.
  • There was less than a minute of silence, and then two police cruisers tore down the vacuous street with their sirens on and stopped in front of the restaurant.



Pronunciation: /ˈvakyo͞oəslē/
Example sentences
  • It provides us no cover to assert vacuously that we are doing what the Supreme Court commands.
  • She was intelligent and coherent and not the least bit cosy or vacuously spiritual.
  • Your statement is probably vacuously true.


Pronunciation: /ˈvakyo͞oəsnəs/
Example sentences
  • But I don't think I can set aside my prejudices about the vacuousness of life in suburban sprawl.
  • I have been conducting an experiment aimed at analysing the intensifying silliness, stupidity and vacuousness of the world.
  • But on a much larger level, it just shows once again the utter vacuousness of our electoral system.


Mid 17th century (in the sense 'empty of matter'): from Latin vacuus 'empty' + -ous.

For editors and proofreaders

Syllabification: vac·u·ous

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