Top definition
Female, beautiful, sexy, too good for you.
Ex.1

A. "That blonde girl is awesome. I'm going to ask her out."
B. "Dude, forget it. She's an unobtainababe."

Ex.2

A. "I thought she was an unobtainababe, but her brother has just told me she wants my number!"
B. "Sweet."
by DF74 January 17, 2011
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