Dictionary

dark horse

noun

: a person (such as a politician), animal, or thing that competes in a race or other contest and is not expected to win

: a person who has interesting qualities or abilities that most people do not know about

Full Definition of DARK HORSE

1
a :  a usually little known contender (as a racehorse) that makes an unexpectedly good showing
b :  an entrant in a contest that is judged unlikely to succeed
2
:  a political candidate unexpectedly nominated usually as a compromise between factions

Examples of DARK HORSE

  1. The Democrat from Utah has gone from being a dark horse to the front-runner in the campaign for President.
  2. The movie is a dark horse for the award.
  3. He is a dark horse, but I did find out that he once played football professionally.

First Known Use of DARK HORSE

1831

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