Definition of "debauch"

[E]v'ry twentieth pace / Conducts the unguarded noſe to ſuch a whiff / Of ſtale debauch forth-iſſuing from the ſtyes / That law has licenſed, as makes temp'rance reel.

1785, William Cowper, “Book IV. The Winter Evening.”, in The Task, a Poem, […], London: […] J[oseph] Johnson; […], page 161

I rose by candle-light, and consumed, in the intensest application, the hours which every other individual of our party wasted in enervating slumbers, from the hesternal dissipation or debauch.

1828, [Edward Bulwer-Lytton], chapter XX, in Pelham; or, The Adventures of a Gentleman. […], volume II, London: Henry Colburn, […], page 196

As I supported him towards his lodgings I could see that he was not only suffering from the effects of a recent debauch, but that a long course of intemperance had affected his nerves and his brain.

1884, Arthur Conan Doyle, John Barrington Cowles

Greene died of a debauch; and Marlowe, the gracer of tragedians, perished in an ignominious brawl.

1902, Thomas Ebenezer Webb, The Mystery of William Shakespeare: A Summary of Evidence, page 242

[T]he room probably was one which he actually used for opium debauches.

1913, Sax Rohmer, chapter 25, in The Insidious Dr. Fu Manchu

The flowers, oppressive to the eyes, blazed with not a petal stirring, in a debauch of sun.

1934 October, George Orwell [pseudonym; Eric Arthur Blair], Burmese Days, New York, N.Y.: Harper & Brothers, Publishers; republished as chapter 2, in Burmese Days (ebook no. 0200051h.html), Australia: Project Gutenberg Australia, November 2015

[T]here were always the gay and silly sensual young girls that Yossarian had found and brought there and those that the sleepy enlisted men returning to Pianosa after their own exhausting seven-day debauch had brought there.

1961 November 10, Joseph Heller, chapter 13, in Catch-22 […], New York, N.Y.: Simon and Schuster

But the Devil had met with too much Success in his first Attempts, not to go on with his general Resolution of debauching the Minds of Men, and bringing them off from God.

1727, Daniel Defoe, chapter 9, in The History of the Devil

Those who with nine months toil had spoil’d a Play,In hopes of Eating at a full Third day,Justly despairing longer to sustainA craving Stomach from an empty Brain,Have left Stage-Practice, chang’d their old Vocations,Atoning for bad Plays, with worse Translations,And like old Sternhold with laborious spite,Burlesque what nobler Muses better write:Thus while they for their Causes only seemTo change the Channel, they corrupt the Stream.So breaking Vintners to increase their Wine,With nauseous Drugs debauch the generous Vine:So barren Gipsies for recruit are said,With Strangers Issue to maintain the Trade;But lest the fair Bantling should be known,A daubing Walnut makes him all their own.

1685, Matthew Prior, “A Satyr on the modern Translators”, in H. Bunker Wright, Monroe K. Spears, editors, The Literary Works of Matthew Prior, Second edition, volume I, Oxford: Clarendon Press, published 1971, page 19

[S]aving of all kinds is pointless when interest is microscopic and state-sponsored inflation is debauching the currency.

2014 March 23, Peter Hitchens, “We're being dragged into a new Cold War by a puffed-up bullfrog (and I don't mean President Putin)”, in Peter Hitchens's Blog at The Mail on Sunday (UK)‎