From Longman Dictionary of Contemporary Englishfifty-fiftyˌfifty-ˈfifty adverb, adjective spoken 🔊 🔊 1EQUALif you divide something fifty-fifty, you divide it equally between two people, companies etcdivide/split/share something fifty-fifty 🔊 The companies split the profits fifty-fifty. 🔊 We’ll share it on a fifty-fifty basis.go fifty-fifty (on something) (=share the cost of something equally) 🔊 We went fifty-fifty on a new TV set.2UNCERTAINif there is a fifty-fifty chance of something happening, it is as equally likely to happen as not to happen syn equal 🔊 a fifty-fifty chance of winning
Examples from the Corpus
a fifty-fifty chance• At least they standa fifty-fifty chance of fighting if they go stupid.• He says he had a fifty-fifty chance of surviving the operation but it was better than no odds at all.• For two siblings there is a fifty-fifty chance that it will share one of its genes.From Longman Business Dictionaryfifty-fiftyˌfifty-ˈfifty adjective1divided or shared equally between two people, companies etcIt was suggested that they continue the development on a fifty-fifty cost-sharing basis. —fifty-fifty adverbWe decided to split the costs fifty-fifty.2having an equal chance of happening in one of two waysYou have a fifty-fifty chance of winning.