Definition of dark horse in English:

dark horse

Line breaks: dark horse


  • A candidate or competitor about whom little is known but who unexpectedly wins or succeeds: a Gloucester side that could be a dark horse for the title
    More example sentences
    • You certainly hide your bushels under your lights, you dark horses!
    • But by no means does Moe view her students as dark horses.
    • You should never judge a man by his instrument, because those classical musicians are dark horses.


early 19th century: originally racing slang.

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