dark horseEnglishOxford New American Dictionarydark horse /ˈdärk ˈˌhôrs, ˈdɑrk ˈˌhɔrs/ ▸ noun a candidate or competitor about whom little is known but who unexpectedly wins or succeeds: [as modifier] a dark-horse candidate. – ORIGIN early 19th century : originally racing slang.
EnglishOxford New American DictionaryEnglishOxford New American Dictionary
EnglishOxford New American Dictionary