• WordNet 3.6
    • n perspicacity the capacity to assess situations or circumstances shrewdly and to draw sound conclusions
    • n perspicacity intelligence manifested by being astute (as in business dealings)
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Webster's Revised Unabridged Dictionary
    • n Perspicacity The state of being perspicacious; acuteness of sight or of intelligence; acute discernment.
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Century Dictionary and Cyclopedia
    • n perspicacity The state or character of being perspicacious. Keenness or quickness of sight.
    • n perspicacity Acuteness of discernment or understanding; penetration; sagacity: as, a man of great perspicacity.
    • n perspicacity Synonyms Sagacity, etc. (see judgment), insight.
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Chambers's Twentieth Century Dictionary
    • Perspicacity state of being acute in discerning: keenness of sight or of understanding
    • ***


Webster's Revised Unabridged Dictionary
L. perspicacitas,: cf. F. perspicacité,. See Perspicacious
Chambers's Twentieth Century Dictionary
L. perspicax, perspicacisperspicĕre, to see through.


In literature:

You can see how I trusted in your honesty and perspicacity.
"'Firebrand' Trevison" by Charles Alden Seltzer
Yet the perspicacity that he seldom wanted failed him at that moment.
"Lectures on the French Revolution" by John Emerich Edward Dalberg-Acton
COMPARATIVE SAGACITY, or Perspicacity, as Gall called it, was a better term than Comparison, which was introduced by Spurzheim.
"Buchanan's Journal of Man, October 1887" by Various
In spite of her usual perspicacity, Nofre had not noticed the effect produced on her mistress by the sight of the careless stranger.
"The Works of Theophile Gautier, Volume 5" by Theophile Gautier
Was there any special kindness in letting him know that I had the perspicacity to see it?
"The Rhodesian" by Gertrude Page
Want of perspicacity, 704.
"Critical and Historical Essays, Volume III (of 3)" by Thomas Babington Macaulay
I wondered whether the diabolical perspicacity of women had seen traces of the kiss on my lips.
"The Belovéd Vagabond" by William J. Locke
And he had the perspicacity to address himself to the Boy rather than to Jabe, thereby conciliating the Boy appreciably.
"The House in the Water" by Charles G. D. Roberts
This requires much tact and rare perspicacity.
"The Sexual Question" by August Forel
I say it in order to give myself an air of perspicacity.
"Pepita Ximenez" by Juan Valera
Their desires, at least, deceived no one of ordinary perspicacity.
"History of the Rise of the Huguenots" by Henry Baird
Lord Widdrington then commenced summing up the case to the jury with his usual care and perspicacity.
"Ten Thousand a-Year. Volume 1." by Samuel Warren
The bottom dropped out of the market for confidence in the integrity of Mr. Iff and conceit in the perspicacity of Mr. Staff.
"The Bandbox" by Louis Joseph Vance
WHEN a man gets a wife who makes him happy, he lays it to his perspicacity; when he doesn't, he lays it on fate.
"Reflections of a Bachelor Girl" by Helen Rowland
With a certain perspicacity, the rich young fellow divined much of his new friend's needs.
"Fairfax and His Pride" by Marie Van Vorst
At last he had the opportunity of demonstrating his own superior perspicacity.
"Library of the World's Best Literature, Ancient and Modern, Vol. 15" by Various
Pretended to a like perspicacity: it was a sneaking, cowardly ruse to know more of her.
"Love's Usuries" by Louis Creswicke
To do so, indeed, supposes that he himself has been lacking in perspicacity and in powers of observation.
"The Popes and Science" by James J. Walsh
Whatever might be Lafond's intellectual or moral deficiencies, lack of perspicacity was not among them.
"The Westerners" by Stewart Edward White
Under his rough exterior Soult hid great powers of business, a keen perspicacity, and much tact.
"Napoleon's Marshals" by R. P. Dunn-Pattison

In poetry:

John T. has perspicacity;
He has a vast capacity
For measuring his moron passing well.
Tho' men of seniority,
When they're in a majority
They'll send him into office for a spell.
"'John T'" by C J Dennis

In news:

He might not think much of official cicerone certification programs, at least not as the only path to sudsy perspicacity, but that doesn't mean that ChurchKey beer director Greg Engert is opposed to a proper malt and hops education.
The legacy of Mitt Romney may take years to weigh but one act dazzles brightly in the present: bold, courageous and evidence of gubernatorial perspicacity.
Reenter the perspicacity and prowess of Pelosi.
First a symbol of front-office perspicacity, then a story of new-age baseball overthinking.
Kudos for having the courage and perspicacity to publish David Cay Johnston's Reuter's column in the Sunday Opinion section.

In science:

The first effort goes back to de Broglie and has been pursued further by Bohm with great perspicacity.
Elementary Considerations on the Interpretation of the Foundations of Quantum Mechanics