from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Acuteness of perception, discernment, or understanding.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Acute discernment or understanding; insight.
  • n. The human faculty or power to mentally grasp or understand clearly.
  • n. Keen eyesight.

from the GNU version of the Collaborative International Dictionary of English

  • n. The state of being perspicacious; acuteness of sight or of intelligence; acute discernment.

from The Century Dictionary and Cyclopedia

  • n. The state or character of being perspicacious.
  • n. Acuteness of discernment or understanding; penetration; sagacity: as, a man of great perspicacity.
  • n. Synonyms Sagacity, etc. (see judgment), insight.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the capacity to assess situations or circumstances shrewdly and to draw sound conclusions
  • n. intelligence manifested by being astute (as in business dealings)


from Wiktionary, Creative Commons Attribution/Share-Alike License

See etymology under perspicacious.



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  • Quickness of sight.

    April 20, 2011

  • Heehee! Paul Lynde was perfect for that.

    April 10, 2008

  • "I pop with perspicacity."

    --Wilbur in the TV adaptation of Charlotte's Web (not the movie--the TV special with Paul Lynde voicing Templeton the rat)

    April 10, 2008