has 3 definitions ordered in order of most common.

1) to want something really bad

2) a strong desire to fill your mouth with a liquid substance repeatedly until satisfied

3) horney, or being sexually aroused - primarrally used in association with women
1) im so thirsty for a new car

2) could be a code word =

3) that is one thirsty chick..
by slightly disturbed February 5, 2008
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1) <adj> Feeling a desire to drink.
2) <adj> Causing thirst.
3) <adj> Expressing a desire to want something.
4) <adj> Chiefly British slang; A exceptionally attractive female (or man, respectively) who is "thirsty for sperm."

--> From Old English: 'Thurst'
1)
That Phidippides must have been thirsty after running 140 miles from Marathon to Sparta in 2 days.

2)
Running 140 miles in two days is thirsty work.

3)
I am thirsty to win that tournament!

4)
SCOTT: "I've just seen a girl; She was thirsty."
FLETCH: "How do you know?"
SCOTT: "I mean she was thirsty for sperm!"
FLETCH: "Show me the girl."
by Stuart Fletcher May 10, 2005
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n. a fat girl that begs for or steals drinks at bars because no guy will buy them one

Plural: Thirsties
Person 1: I set my beer down to dance. When I turned around to take a swig, this fat bitch was slamming it.

Person 2: That's because she's a thirsty.
by Ronnie Danger April 15, 2010
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The act of wanting someone or something more than is neccessary
Ryan: I really want to see nadia again.

Brad: Damn you really want her dont you?

Nick: Ya he sure is thirsty as hell on her.
by Pantherfreak January 2, 2009
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A guy that wants every bitch he see as long as she got cake and aint prude. This can also be a girl she wants to fuck every guy she meets and doesnt like to keep people put of her pants.
He/she is thirsty as fuck look at him/her basically crying for some fake attention
by Kurby123 June 5, 2014
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to feel a very passionate desire for the same sex!!
VERY THIRSTY!!

oop he reel thirsty gurl

i'm thirsty and i ain't talkin bout a drink
by neefa balinski March 22, 2010
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1. Someone who is desperate to be with the in crowd and will do whatever it takes just to earn a bit of attention from someone above them socially who could care less about them. they are also well known to be under peer pressure all the time as they are never themselves but instead a poser. They're like that puzzle piece that looks like it fits but just doesn't go there. they can be seen following the leader of the pack also known as the entourage.

2. Someone who is (usually a teenage girl) and approaches someone that is usually happens to be a teenage boy that becomes famous online by "inventing" a hot trend, dance, or song etc. all the girl wants to do is just to have sex or do other sexual inspired innuendos with him or the close friends of the famous celebrity just to say "i had sex with insert name here". also see groupie or One night Stand
1. Thirsty Freshman: Austin
"Damn your shirt is hot son"

Upperclassman: Greg
"Aye thanks freshman"

After the underclassman leaves and the upperclassman joins his friends he talks about the thirsty underclassman.

"Damn that Freshman was so thirsty with his lame ass.
i played his but he can't see the forest for the tress ha ha"...

2. A perfect Example is The GGPR group, after they became famous, numerous girls suddenly wanted desperately to give affection to any of the members of the group they could juice for Sex.
by Lauren Laren 2010 August 30, 2009
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