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perspicacious

[pur-spi-key-shuh s] /ˌpɜr spɪˈkeɪ ʃəs/
adjective
1.
having keen mental perception and understanding; discerning:
to exhibit perspicacious judgment.
2.
Archaic. having keen vision.
Origin
1610-1620
1610-20; perspicaci(ty) + -ous
Related forms
perspicaciously, adverb
perspicaciousness, noun
Can be confused
perspicacious, perspicuous.
Synonyms
1. perceptive, acute, shrewd, penetrating.
Antonyms
1. dull, stupid.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for perspicaciousness

perspicacious

/ˌpɜːspɪˈkeɪʃəs/
adjective
1.
acutely perceptive or discerning
2.
(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 perspicaciousness

perspicacious

adj.

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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