Definition of 'vacuous'

Adjective

1. devoid of intelligence
      Synonyms: asinine fatuous inane mindless
2. devoid of significance or point; "empty promises"; "a hollow victory"; "vacuous comments"
      Synonyms: empty hollow
3. devoid of matter; " a vacuous space"
4. void of expression; "a blank stare"
      Synonyms: blank

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