flagrante delicto

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fla·gran·te de·lic·to

 (flə-grăn′tē dĭ-lĭk′tō)
1. In the very act of committing an offense; red-handed.
2. In the act of having sex.

[Medieval Latin flagrante dēlictō, while the crime is blazing : flagrante, ablative of flagrāns, blazing + dēlictō, ablative of dēlictum, offense.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

flagrante delicto

(fləˈɡræntɪ dɪˈlɪktəʊ)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

fla•gran•te de•lic•to

(fləˈgræn ti dɪˈlɪk toʊ)
in the very act of committing the offense.
[< Latin: while the offense is (still) burning]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

flagrante delicto

A Latin phrase meaning while the crime is blazing, used to mean red-handed or in the act.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
References in classic literature ?
And just then there came a knock and a scurrying; the police, so lamentably absent from the Calton Hill, appeared upon the scene; and the party, taken FLAGRANTE DELICTO, with their glasses at their elbow, were seized, marched up to the police office, and all duly summoned to appear as witnesses in the consequent case against that arch-shebeener, Colette.
D'Artagnan proposed to himself to take them by surprise in flagrante delicto of wandering life, and to judge by the first appearance if he could count on them as trusty companions.
But sex definitely is as The Tudors sets out to do for merrie olde England what Rome did for Italy with plenty of in flagrante delicto (as they say) to spice up the boring talk of international treaties.
When the father discovers Coop and Anna in flagrante delicto one stormy night, he beats Coop nearly to death, causing the lovers to flee the farm and take up separate lives.
In his latest novel, THERE'S ALWAYS A REASON (Strebor Books, $14), William Fredrick Cooper weaves a powerful story about the crucible of love, betrayal and redemption, it is the story of William McCall, whose cycle of loss begins when--while preparing to make a surprise marriage proposal--he catches his girlfriend in flagrante delicto with another man.
Bird informs him that the judge in question was photographed by his wife in flagrante delicto with a law clerk.
Even the most straitlaced among us have surely wondered: In zero gravity, what kinds of Cirque du Solar System permutations could one perform with a partner in flagrante delicto? Well, in case you were planning on forking over that extra million bucks to Richard Branson or Robert Bigelow to take you up to space so you could found the "250-Mile-High Club," you might want to save your money.
In his view, the ellipticals and lenticulars that he caught in flagrante delicto are obviously absorbing or tussling with other galaxies, but they contain little interstellar gas--the raw material for making new stars.
Moreover, this colorful compendium evinces a sense of humor in reproducing a rare colored print that shows Catherine and Potemkin in flagrante delicto, an image that piqued European curiosity (180).
A video depicting one of Egypt's top belly-dancers in flagrante delicto leaked onto the street and internet, following a police raid on the villa of a well-known (and married) Egyptian businessman.
One of his main points in this regard is that Deuteronomy prevents a husband from having his wife put to death for adultery, unless the illicit tryst is discovered in flagrante delicto, in which case Deuteronomy demands the death penalty without exception.