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1.
A person with huge celebrity status
Oh my gosh he is such an a-lister, I wanna be like him.
by funnyaznz August 12, 2011
 
2.
A derisive reference to a very minor celebrity. Closer to z-lister.
Did you see last year's Big Brother loser in the papers again? What an alister!
by N Ewon November 09, 2007