Definition of dark horse in English:

dark horse

Line breaks: dark horse

noun

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.

Origin

early 19th century: originally racing slang.

Definition of dark horse in:

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