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[pur-spi-key-shuh s] /ˌpɜr spɪˈkeɪ ʃəs/
having keen mental perception and understanding; discerning:
to exhibit perspicacious judgment.
Archaic. having keen vision.
Origin of perspicacious
1610-20; perspicaci(ty) + -ous
Related forms
perspicaciously, adverb
perspicaciousness, noun
Can be confused
perspicacious, perspicuous.
1. perceptive, acute, shrewd, penetrating.
1. dull, stupid. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for perspicacious
  • No wonder this perspicacious Justice accounts for seven of the thirty-eight selections.
  • Doug, that was both a perspicacious and hilarious comment.
  • And we'd like to thank you, Scott, for being such an astute reader and perspicacious student of the environment.
  • He was perspicacious and honest enough to acknowledge to himself the danger of such a stand.
  • It's curious for what he left out of the album, although in general he was an astonishingly perspicacious judge of himself.
  • Because it makes them the imperial arbiters, or at least the perspicacious announcers, of what history is going to bring.
  • Indeed, perspicacious geographers have always been troubled by this division.
British Dictionary definitions for perspicacious


acutely perceptive or discerning
(archaic) having keen eyesight
Derived Forms
perspicaciously, adverb
perspicacity (ˌpɜːspɪˈkæsɪtɪ), perspicaciousness, noun
Word Origin
C17: from Latin perspicax, from perspicere to look at closely; see perspective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for perspicacious

1630s, formed as an adjective to perspicacity, from Latin perspicax "sharp-sighted, having the power of seeing through; acute" (see perspicacity). Related: Perspicaciously; perspicaciousness.

Online Etymology Dictionary, © 2010 Douglas Harper
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