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1.
Simply a derivative of the word yes and yeah, when satisfied with something, or attempting to get eminent gratification.
pishoogle: did you finally beat RogueShip?
ipwnzerzj00: yeeeshhhhhhh
by Qw33n Kuma November 13, 2003
 
2.
An amalgamation of the words "Yes" and "Yeah"
by Anonymous January 31, 2003
 
3.
-yes in the coolest manner it could be in.
-often used in IMing but can be used in a comical
conversation.
Janeiscool: hey did u go 2 that party yesterdayy?

forshizzlemynizzle: yyyeshhh for shure! it waz awesum!

Janeiscool: it waz.
by 14946 February 06, 2009
 
4.
The hypberbolic yes.

Used as a variation of the world yes.

Origins:
Just as the hyperbolic sine is sinh.
Exclamation:
Yesh! It's an extender, that really is the icing on the cake.

Affirmation:
"Hey, did you bone Sally?"
"Yesh, indeed!"
by Julian G Fox April 18, 2008
 
5.
1.the best way of sayin yes
2.yes
3.ya
4.yaman
dude:do u wanna do somthin?
chick:yesh!
by Char June 07, 2003
 
6.
A synonym for the word "Yes", with a little pizazz.
Person #1: So did you see that cool movie "Interview With The Vampire"?

Person #2: Yesh I did!
by Chrizzle. December 10, 2007
 
7.
Meaning "Yes", but jokingly, wittily, to lighten the mood...
... used by Micheal Scott of the Office when being disciplined by his superior... David asks if everything is clear... Micheal says... "Yeshhh"... indicating he doesn't take the scolding too seriously...
by the tile ninja January 17, 2010