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1.
1. Extreme indulgence in sensual pleasures; dissipation.
2. debaucheries (Orgies).
3. Archaic. Seduction from morality, allegiance, or duty.
The debauchery was so hard core last night that I won't be able to get another erection for weeks.
by deplemisher April 24, 2003
 
2.
to lead astray morally; to corrupt.
Or to basically explain how crazy something is.
Girl: Last night was total debauchery
Boy: I know, that party was insane.
by Rach L </3 July 12, 2005
 
3.
a wild gathering involving excessive drinking and promiscuity
The debauchery on Lansdowne was only followed by more on Stuart Street when Steve Porter came to beantown to celebrate his new CD release tour PORTERHOUSE!!!
by kfergs July 22, 2005
 
4.
A dorky word meaning an occurrence of crazy inappropriate behavior, such as an orgy. What it usually means in practice is a night where some drinking occurs and people act slightly less uptight than usual. The kind of people who get involved in real "debauchery" never use this word.
Dwight: "Wow, that physics party was off the heezy for sheezy! I had like 6 beers and we played strip poker and these two girls stripped all the way down to their bra and panties! Such debauchery!"
Ted: "Shut up man - you have no clue. I just woke up next to three hookers in a pool of my own vomit with coke powder scattered all over myself and a new dick piercing that I have no clue how I got. I'll catch you later. I need to head to the doc - it itches. Typical Thursday night."
by Nicholas D July 18, 2008
 
5.
1. debauchery - a wild gathering involving excessive drinking and promiscuity

debauch, drunken revelry, bacchanalia, saturnalia, orgy, riot, unrestrained merrymaking - peterborough lyfe (obvs)
peep 1: Dude. You going to the cuntry club party tonight?
peep 2: Not sure. I'm so not into all the drama and debauchery. It's probably going to turn into a no-pants spin the bottle party turned orgy on film again.
peep 1: Oh, probably. See you there then?"
peep 2: Yeah. Pick me up some 40s, will ya?
by bootcut bill December 29, 2008