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1.
The best ever. Someone who's greater than great.
sean cartel: Ur great
Toria: haha
Toria: ur greaterest
by Victoria_SD October 18, 2005
 
2.
when someone or somehting is even better than greater...or greatest...it also beats best..and bestest lol but is not quite as high as awesome..or awesomest
"amanda (studly) is the greaterest"
by Carl 1987 March 08, 2006