even money

 

noun

[mass noun]
  • (in betting) odds offering an equal chance of winning or losing, with the amount won being the same as the stake: players bet on each throw for even money [as modifier]: Romany King swept past the even-money favourite Paco’s Boy
  • [as modifier] (of a chance) equally likely to happen or not; fifty-fifty: above those engines there was an even-money chance of being heard