1645–55; from Latin vacuus “empty”; see -ous (Source:

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

Definitions of Vacuous



  1. without contents; empty:
  2. lacking in ideas or intelligence:
  3. expressing or characterized by a lack of ideas or intelligence; inane; stupid:
  4. purposeless; idle:
  5. containing nothing; empty
  6. bereft of ideas or intelligence; mindless
  7. characterized by or resulting from vacancy of minda vacuous gaze
  8. indulging in no useful mental or physical activity; idle
  9. logic maths (of an operator or expression) having no import; idle: in (x) (John is tall) the quantifier (x) is vacuous



  1. Having or showing a lack of thought or intelligence; mindless.
  2. Empty.



  1. : emptied of or lacking content
  2. : marked by lack of ideas or intelligence : stupid, inane a vacuous mind a vacuous movie
  3. : devoid of serious occupation : idle

Example sentences for Vacuous

  1. Smith speaks with perfect articulation and a vacuous undertone laces her words.
  2. The assumption that feminism comes in a neat, Xeroxable package is gravely outmoded and vacuous.
  3. Speaking of Daisy, Mulligan does as elegant a job as possible portraying such a vacuous character.
  4. In America, however, there is a stubborn strain of vacuous unawareness that reflects no credit on American society.
  5. That vacuous content which engrosses the body after long indisposition, held her imperatively.
  6. But they were nowhere to be seen; the faces were stolid, or indifferent, or intent, or vacuous.
  7. He was in his ghostly incognito, for he always traveled lightly in vacuous and doubtful regions.
  8. The counsel of the vacuous Mr. Fopling followed him to ring in his ears like words of guidance.
  9. Vacuous refers to the condition of being empty or vacant, regarded as continuous or characteristic.

Related words & Synonyms

blank, drained, dull, dumb, foolish, half-baked, inane, minus, shallow, silly, stupid, superficial, vacant, void, uncomprehending, airheaded, birdbrained, emptied, lamebrained, unreasoning

Nearby words

vacuity , vacuolate , vacuolated , vacuolation , vacuole , vacutome , vacuum , vacuum activity , vacuum aspiration , vacuum bottle

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