• WordNet 3.6
    • n duplicity acting in bad faith; deception by pretending to entertain one set of intentions while acting under the influence of another
    • n duplicity a fraudulent or duplicitous representation
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: Heavyweight tire manufacturer Goodyear is in no way affiliated with Charles Goodyear, the inventor of vulcanized rubber. They merely admired his inventiveness and his process that was so easy to duplicate that competitors simply stole it.
    • duplicity Doubleness of heart or speech; insincerity; a sustained form of deception which consists in entertaining or pretending to entertain one set of feelings, and acting as if influenced by another; bad faith. "Far from the duplicity wickedly charged on him, he acted his part with alacrity and resolution."
    • duplicity Doubleness; a twofold state. "Do not affect duplicities nor triplicities, nor any certain number of parts in your division of things."
    • duplicity (Law) In indictments, the union of two incompatible offenses.
    • duplicity (Law) The use of two or more distinct allegations or answers, where one is sufficient.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: The chances of an exact duplication of fingerprints are about 64 billion to 1.
    • n duplicity The state of being double; doubleness.
    • n duplicity Doubleness of heart or speech; the acting or speaking differently in relation to the same thing at different times or to different persons, with intention to deceive; the practice of deception by means of dissimulation or double-dealing.
    • n duplicity In law, the pleading of two or more distinct matters together as if constituting but one. Synonyms Guile, deception, hypocrisy, artifice, chicanery.
    • n duplicity In biology, the division of a part of the body of an organism, such as a limb or a digit, into two equivalent parts which may be regarded as equivalent to normal single members.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: Many sharks lay eggs, but hammerheads give birth to live babies that look like very small duplicates of their parents. Young hammerheads are usually born headfirst, with the tip of their hammer-shaped head folded backward to make them more streamlined for birth.
    • Duplicity doubleness: insincerity of heart or speech: deceit
    • ***


  • Blaise Pascal
    “We are only falsehood, duplicity, contradiction; we both conceal and disguise ourselves from ourselves.”
  • George A. Knight
    George A. Knight
    “Dishonesty, cowardice and duplicity are never impulsive.”
  • Helen Rowland
    “A man's desire for a son is usually nothing but the wish to duplicate himself in order that such a remarkable pattern may not be lost to the world.”
  • Doug Horton
    “The key to heaven's gate cannot be duplicated.”
  • Charles Caleb Colton
    “Nothing more completely baffles one who is full of tricks and duplicity than straight forward and simple integrity in another.”
  • Susan Sontag
    “The problems of this world are only truly solved in two ways: by extinction or duplication.”


Webster's Revised Unabridged Dictionary
F. duplicité, L. duplicitas, fr. duplex, double. See Duplex
Chambers's Twentieth Century Dictionary
L. duplicāre, -ātumduplexduo, two, plicāre, to fold.


In literature:

The division of the matter without serious duplication is more easy than might at first be imagined.
"Side-lights on Astronomy and Kindred Fields of Popular Science" by Simon Newcomb
In form and manner it seems almost a duplicate of the catbird on a small scale.
"Wake-Robin" by John Burroughs
While duplicates of the two letters were being made, the Union generals present were severally presented to General Lee.
"Memoirs of Three Civil War Generals, Complete" by U. S. Grant, W. T. Sherman, P. H. Sheridan
Nor was she alone in her duplicity.
"Graustark" by George Barr McCutcheon
A simple story, of which many a duplicate could be found in this country of ours.
"A Modern Chronicle, Complete" by Winston Churchill
She had no duplicity, no guile, no arts.
"The Battle Of The Strong, Complete A Romance of Two Kingdoms" by Gilbert Parker
Nothing stood between the enchanted dream of her existence and a cruel catastrophe but her duplicity.
"Victory" by Joseph Conrad
The records of the expedition have been kept in duplicate.
"Canyons of the Colorado" by J. W. Powell
Surely Crane was a past master in duplicity.
"Thoroughbreds" by W. A. Fraser
There have been no duplicates there.
"Joe Strong The Boy Fire-Eater" by Vance Barnum

In poetry:

So are our lives, with days that seem
So usual, yet in truth are strange...
Such days we never duplicate;
Life is change!
"Strange Ships" by Robert A Donaldson
But he, like many a rich young man,
Through this magnificent fortune ran,
And nothing was left for his daily needs
But duplicate copies of mortgage-deeds.
"The Baby's Vengeance" by William Schwenck Gilbert
Slipping by! Slipping by!
O'er waves that duplicate the sky
I watch you daily come and go,
But rarely is there one I know
Of all who at your railings stand,
To view with joy this storied land.
"Evanescence" by John Lawson Stoddard
Many were the sins of others and you never were to blame,
Some were sins you shared in common—you must suffer all the same;
Some were sins of wasted hours with the wine cup or a mate,
But you cannot share the burden—and they come in duplicate.
"When Your Sins Come Home to Roost" by Henry Lawson

In news:

General Internation Mini-lathe Duplicator .
General International just released a new mini-lathe duplicator , useful for replicating parts or duplicating spindles.
There are a lot of key duplicators on the market today and choosing the right one can be a problem.
All but writing off a comet-exploring spacecraft apparently destroyed in a rocket-firing accident this month, project managers suggested today that NASA build a duplicate craft to take up the mission.
Philip Nelson hopes to duplicate Rickey Foggie 's 4-year run at quarterback.
Nocturnal helmet geckos are among the very few living creatures able to see colors at night due to their unique ocular system, which researchers believe could be duplicated to develop better contact lenses and cameras in the future.
Lynn Griffin believes whatever your favorite golf club may be, however complicated the specs may be, make sure you have it duplicated.
Starkly illustrates both the duplicity and unflinching honesty of cinema.
This has led to duplication and inefficiency .
General International just released a new mini-lathe duplicator, useful for replicating parts or duplicating spindles.
Trevor-Roper's review of Forgers and Critics: Creativity and Duplicity in Western Scholarship by Anthony Grafton.
I have successfully duplicated her Swedish meatballs with healthier ground turkey.
The Express Tool called Overkill has been part of AutoCAD for years and years and can work wonders if your file is full of duplicate objects.
Government wasting 'tens of billions' of dollars annually on duplication, overlap .
Even if you can't duplicate the distinctive form, the sweet, yeasty flavor of this recipe is authentic.

In science:

Therefore from now on we will treat Li as a random graph in G(n, M ), without duplicates.
Random groups and Property (T): \.Zuk's theorem revisited
Every interval order P can be uniquely obtained from a primitive interval order P ′ by simultaneously replacing each element of P ′ by a positive number of ‘duplicates’.
Counting Self-Dual Interval Orders
PLC mechanisms are used to limit quality degradation caused by packet losses by means of compensating the lost ones – in the simplest scenario, they insert a duplicate of the last received packet as a substitute for the lost one .
Lost Audio Packets Steganography: The First Practical Evaluation
Note that the elements of a #sum constraint form a multiset, possibly containing duplicates.
Complex Optimization in Answer Set Programming
While the second arguments, 0 and 1, are simply indexes (enabling the representation of duplicates in multisets), the third ones provide literals, p and t, each having the (default) weight 1, as given in the fourth arguments.
Complex Optimization in Answer Set Programming