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1.
A person who would try to seduce his friend's girl, or another man's for his own enjoyment with complete and utter disregard to respecting that man.
Danny Coultas you lied to Matt about screwing his girlfriend, you sir are a swooper
by Brendan Lyons January 15, 2006
 
2.
Noun
A person who hits on, flirts with, or generally acts interested in someone who is already actively being sought after in a romantic or sexual sense, drawing attention away from the original interested party to himself or herself.
I was talking with this hottie at the party when a swooper interrupted our conversation and would not leave him alone for the rest of the evening.
by Li-Li Joy September 27, 2009
 
3.
N- Technical term for an observant barfly almost always male. Usually waiting for said females to get very drunk and when the time is right, swoop in and take her home to fuck her brains out.
Dawn-- I saw Frankie at the bar again last friday.

Michelle-- Yeah, me too, He's a swooper.
by Franswa September 26, 2007
 
4.
Someone who butts in and tries to take over a job or project that you are working on. It's a negative term.
Molly is such a swooper! You can't start anything without her trying to butt in!
by Bailey Grey December 18, 2007
 
5.
a womens breasts , boobs etc.
That blonde has massive SWOOPERS!!!!
by swoopdaddy October 24, 2009
 
6.
The person who makes the first move in new romantic relationships. Typically, one person will be the swooper or more of a swooper than the other person. The swooper is the person who hits on on the other person, asks them out on a date, reaches over to hold their hand the first time, leans in for the first kiss, etc.
Jen: Tell me about how you guys met. Who swooped who?
Maria: We knew each other for a while, but he wouldn't do anything, so I finally had to ask him out.
Rod: Yeah, she's always been the swooper.
by Deekers February 19, 2008
 
7.
The dancing girls dressed in hippie clothes at Greatful Dead concerts
The swoopers were dancing in the aisles during Uncle Johns band
by 2cat January 27, 2011