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1.
A combination of the words "All," "of" and "That." Together they are pronounced "All of That," or a shorter version is just All that.

It is a word used to praise or compliment someone or something for being on top of his/her/its game.
Jerk #1: "Ey, check out that girl down the street. Man she's alladat!"

Jerk #2: "Yemen."
by Elmer May 30, 2005

Words related to Alladat

all that yemen
 
2.
a slang phrase dirived from allow that created by scottizle maurizle pirated(COPIED) by Benito
"alla-dat man"
by SM July 02, 2004