Top Definition
adjective -

(1) - The state of supemacy over the best rivals.
(2) - The best of the best
Among the famous freedom fighter, Gandhi is definately the greatestest
by Blackjack1994 July 07, 2011
1 more definition
by far greater than greatester.
michael jordan was the greatestest basketball player of the last twenty years.
by latigo December 31, 2010

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