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Meaning of fifty-fifty

fifty-fif•ty

Pronunciation: (fif'tē-fif'tē), [key]
— adj.
  1. equally good and bad, likely and unlikely, favorable and unfavorable, etc.: a fifty-fifty chance of winning.
—adv.
  1. in an evenly or equally divided way: The board voted fifty-fifty on the merger.
  2. to share equally in the cost, responsibility, or profits (of&hasp;): We went fifty-fifty on the dinner check.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.