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1.
Of dubious honesty; greedy, like a shyster.
They didn't give you your money back? That's hella shysty, dude.
by Danny Delinquent September 26, 2003
110 21
 
2.
Extremely greedy. Never ever shares. Does not even consider anyone or anybody.
Person 1: Let me get some of that.
Person 2: No!
Person 1: Dude, you are so shysty!
by Pur October 04, 2006
50 27
 
3.
adjective..
unfair, injustice;
synonym: grimy
common mispelling: sheisty, shyT, shisty

shy-stee
Kids: can we go outside today
Teacher: no weve got to work today
Kid: awww man dats shysty
teacher: what did you say to me> detention!
Kid: thats some shysty shit.
by O Brilliant One April 17, 2006
59 36
 
4.
One who changes,acts differently or treats friends not like friends
Man ever since dey done came back from bien wit da seniors dey been actin shysty
by KAILIP February 17, 2008
25 22
 
5.
scummy, creepy, something that leaves you with a bad vibe
That guy leaves me with a bad vibe, he's shysty.

or

That's really shysty.
by Tamsin September 15, 2005
33 31
 
6.
To me the definition of shysty is a bitch. Not a bitch in the seance of a female or a dog, but a bitch in the sense of a person who dose deceitful devious shit.
If you go out your way to go behind someones back than your a shysty bitch.
If every word that comes out of your mouth is a lie you's a shysty ass bitch.
But when you lie to me about some bullshit and wont let me brake up with you because you want to wait until ya hoe ass finds a another "victim" and then break up with me almost a month after i broke up with you annd then try your damdest to be "cool" with me....
I got news for ya girl. YOU'S A MOTHA FUCKIN SHYSTY ASS MONKEY COCK SUCKIN DIRTY HUNGRY ASS BITCH
ShaQuaQua is a shysty ass back stabbin BITCH!!!!
by Cordiar December 10, 2007
32 35