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1.
Having casual sexual relations frequently with different partners; indiscriminate in the choice of sexual partners.
by Anonymous September 23, 2003
 
2.
Being sexually active with many different people. Depending on its use, it can be good or bad.

Men, as they have usually set the standards, are rarely regarded/looked down upon as promiscuous. Women, on the other hand, aren't so lucky, despite that the tide is turning in their favor.

Still, sexual behavior has little, if anything, to do with someone as a person. Somebody can be very active sexually and yet be caring and thoughtful at the same time... although it doesn't apply to everyone.
Britney Spears has a reputation for being promiscuous. She's the epitome of the vamp... or slut, as I should probably say.

How many men/women does a woman have to sleep with to be concidered promiscuous? 10? 7? 5? 3? 2? 1?

Promiscuous women are (often unfairly) known as harlots, sluts, and whores, among other things.

How many men/women does a man have to sleep with to be concidered promiscuous? 10? 50? 100? 500? 2,000?

Promiscuous men are usually known as studs... or lechers or dirty old men, depending on the age of the man or who he is.
by Lorelili October 28, 2005
 
3.
1. Sexually indiscriminate: Having many indiscriminate or casual sexual relationships. Choosing a partner for sexual intercourse without care.

2. Choosing carelessly or without discrimination.

3. Confusedly mixed: Mixed in an indiscriminate or disorderly way.

4. Random: Occurring without any set or specific pattern or time.
A sail caught by a promiscuous wind.
by Jafje April 10, 2007
 
4.
A fancy word for slut.
Ava Devine is quite promiscuous. I just watched her get rammed by three cocks.
by bampersand July 29, 2008
 
5.
Someone who is getting more than you are, thereby making you envious of him/her.
My roommate Jill is a promiscuous slut.
by brownwings July 03, 2011
 
6.
enjoying casual sexual activity with any and everything walking on two legs. in some cases, the two legs are not even necessary.
jack's the most promiscuous guy i know .. his name's pretty suitable for him too , his parents must have guessed he'd be like this.
by beautifulgirl May 29, 2006
 
7.
adj. 1. classification of woman who is identified as being an easy score or lusts in an abmormally frequent manner, easy brain/meat, the type of chick whose skimpy bikini or tight butt shorts and see through top scream, "sexually active since eleven," and tend to harder males of perversion and desperation, a slut
Although my friend Tash seemed a tad promiscuous from the start it turned out she was sworn to virginity.
by riz March 11, 2004