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1.
A word used to express displeasure, dissapointment, discomfort or disgust at anything or anyone.

Derived from snitch, a universally hated type of person.
Example 1:

Person A: Sup man?

Person B: Not so good, this week's been really Snitchy.

Person A: How so?

Person B: My girlfreind been acting like a bitch lately. and on top of that, my computer's hard drive got corrupted.

Person A: Aww, that's fucking Snitchy dude!

Person B: Really Snitchy!

Example 2:

Person A: Hey, wanna go get some McD's?

Person B: Nah, that place is snitchy. It gives me bad vibes.
by CosmicMonkey January 01, 2011
 
2.
a nickname for person that snitches
yoooo what up snitchy?

yooo wat up big snitchin?

yoo snitchy, have a piece of pie.

yooo you snitchy grimy a$$ mothasucka
by sudaku May 23, 2010
 
3.
cranky, bad-tempered (Australian)
That girl is real snitchy today; she's even got her ears back.
by John Boon April 24, 2005
 
4.
the sexiest bitch the world has ever seen
mmm, look at snitchy, she's hott
by Yo February 25, 2003
 
5.
a girl who is taken by someone who really loves her.
back off biznitches, snitchy is mine!
by Chica April 06, 2005