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1. Someone who unexpectedly wins a competition. Nobody thought Cheri could win the race after breaking her leg last year, but she turned out to be a dark horse and took first place. No one thought the brash newcomer would be a threat to the established candidates, but he's turning out to be a real dark horse in this campaign.
2. Someone who surprises others with their skills or talents. Primarily heard in UK, Australia. Angela was suddenly viewed as a dark horse when she displayed her beautiful sculptures at the art fair. Nobody knew she had such artistic talent.
Fig. someone or something whose abilities, plans, or feelings are little known to others. (From a race horse about which little or nothing is known.) It's difficult to predict who will win the prize—there are two or three dark horses in the tournament. Everyone was surprised at the results of the election. The dark horse won.
A little known, unexpectedly successful entrant, as in You never can tell-some dark horse may come along and win a Senate seat. This metaphoric expression originally alluded to an unknown horse winning a race and was so used in a novel by Benjamin Disraeli ( The Young Duke, 1831). It soon began to be transferred to political candidates, among the first of whom was James K. Polk. He won the 1844 Democratic Presidential nomination on the eighth ballot and went on to win the election.
a dark horse
1. If you describe someone as a dark horse, you mean that you have just discovered something about them, especially a skill or an achievement, that they had not told you about. I didn't know Clare could sing like that. She's a dark horse. What a lot of friends from the past you have — you really are a dark horse, Robert!
2. A dark horse is someone who wins a contest, race, etc when they were not expected to. Czech Karel Novacek, the dark horse of the international tennis circuit, beat his opponent 7-5, 6-2, 6-4. Note: You can also use dark horse before a noun. William Randolph Hearst had briefly been a dark horse candidate for President in 1908. Note: This expression may refer to a horse which people do not know very much about, so that it is difficult to predict how well it will do in a race.
a dark horsea person, especially a competitor, about whom little is known.
The expression was originally horse-racing slang. The earliest recorded use was by Benjamin Disraeli in 1831 : ‘A dark horse, which had never been thought of…rushed past the grand stand in sweeping triumph’.
a dark ˈhorse(British English) a person who does not tell other people much about their life, and who surprises other people by having interesting qualities: You’re a dark horse! I had no idea you could play the piano so well.This phrase comes from horse racing. A dark horse was a horse that nobody knew much about and later came to mean somebody who wins a race unexpectedly.
1. n. an unknown entrant into a contest; a surprise candidate for political office. The party is hoping that a dark horse will appear before the election.
2. mod. previously unknown. A dark horse player can win if all the others are creeps.