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Definitions

American Heritage® Dictionary of the English Language, Fourth Edition

  1. adj. Devoid of matter; empty.
  2. adj. Lacking intelligence; stupid.
  3. adj. Devoid of substance or meaning; inane: a vacuous comment.
  4. adj. Devoid of expression; vacant: "The narrow, swinelike eyes were open, no more vacuous in death than they had been in life” ( Nicholas Proffitt).
  5. adj. Lacking serious purpose or occupation; idle. See Synonyms at empty.

Century Dictionary and Cyclopedia

  1. Empty; unfilled; void; vacant.
  2. Without intelligence or intelligent expression; unexpressive; showing no intelligence: as, a vacuous look.

Wiktionary

  1. adj. Lacking meaningful content.
  2. adj. Showing a lack of thought or intelligence; vacant

GNU Webster's 1913

  1. adj. Empty; unfilled; void; vacant.

WordNet 3.0

  1. adj. devoid of intelligence
  2. adj. devoid of matter
  3. adj. devoid of significance or point
  4. adj. void of expression

Etymologies

  1. From Latin vacuus, empty; see vacuum.

Examples

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Lists

These user-created lists contain the word ‘vacuous’.

Comments

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  • Louises One knows one's madnesses, by and large. By and large the knowledge is vacuous. The notion of naming the beast to conquer it is the idiot optimism of psychotherapy. From "The Last Werewolf" by Glen Duncan. Mar 3, 2012

  • rolig I don't think I would describe a house as "vacuous" -- a face, an expression, a mind, yes, but not a house. For a house I would use the word "vacant". In fact, checking the Oxford American Dictionary, I see that, under "vacuous", the meaning "empty" is marked as "archaic". Oct 30, 2010

  • Alexis Perez Empty: The house was vacuous after the family left. (newbury house dic) Oct 30, 2010

  • jennarenn This word *perfectly* describes the face of one of my students. Some days I want to walk over and check his pulse. Sep 21, 2007

‘vacuous’ has been looked up 3205 times, loved by 18 people, added to 113 lists, commented on 4 times, and has a Scrabble score of 12.