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A person who is generally unpredictable and has no defined role in a group of friends, and their often reckless and wacky behavior can either benefit or hurt the group depending on the situation.
Mac: Guys, why aren't the breaks working?
Charlie: Because I cut the breaks! Wildcard, bitches! YEEEEEEEEEEEEEEHAWWW!
by ghost of billy mays July 24, 2010
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1) A card that can used as any card in a game of poker.

2) A person who is surprisingly good at everything.

3) A person who doesn't have a defined set of characteristics and has a random set of talents/skills. This person is often very unpredictable.
1) If dealer calls aces as the wild card, 1,2,Ace,4,5 would be a straight.

2) Brian: hey Daniel how did your game go?
Daniel: Good I threw 40 yard pass with 10 seconds on the clock to win the game.
Brian: what you doing now?
Daniel: studying for my calculus test I don't want to loose my 4.0 gpa.

3) John: I can fix the car.
Joe: Really? I always thought you were just a smelly hippie burnout.
John: No, I don't even smoke weed and I hate hippies.
Joe: But.. your wearing a tie dye shirt and you have dreadlocks ....
by Danimal300 June 28, 2009
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1. something unpredictable and outside the normal rules

2. someone or something that is pretty much picked at random ( both senses from poker)
It looks like the wild card won't help you here.
by The Return of Light Joker January 19, 2010
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a girl who is unpredictable but fun. The life of the parties but never easy. Everyone wants her, but she cant be held down. You never know what to expect!
She is not like all the other girls, she's different. She's a wildcard.
by whosethatguy? March 19, 2011
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1. In poker, a card which can be assigned any value the cardholder wishes.
2. An factor affecting events in an unknown or unpredictable fashion.
3. In sports, usually a playoff spot available to a team that does not finish first in their division or league.
1. In this hand, sixes are wild.
2. I know what John is going to say, but Vince is always a wildcard.
3. The Cleveland Indians are behind the Yankees, but they still have a chance at the wildcard spot.
by ronald x October 02, 2003
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a wildcard in computer world is eg. *?

a * usually represents zero or more any characters, numbers etc, and a ? means any 1 character, number etc.
they're used to denote many files, or search for something (called glob searching)
*.exe for all exe files in some directory
*hotrod* to search for word hotrod anywhere in a doc
by deice May 28, 2003
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a card in games that can be used as another amount.
I need a wildcard
by toy October 06, 2003
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