A girl who cant settle down for one boyfriend. Even if she likes her current boyfriend within a few weeks she will move on to another person
Boy 1: Damn my girlfriend dumped me today

Boy 2: But you two were really good together

Boy 1: I guess she was an Alkistis
by Moorwi July 22, 2010
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A combination of Alki and STI - a poly/multi-sexual alcoholic who will provide a sexual partner with various STI's and/or alcholic beverages
ughh I pulled an Alkisti last night
by Alkisti November 30, 2008
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