Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun dark_horse

2 senses of dark horse

Sense 1
dark horse -- (a political candidate who is not well known but could win unexpectedly)
       => campaigner, candidate, nominee -- (a politician who is running for public office)

Sense 2
dark horse -- (a racehorse about which little is known)
       => racehorse, race horse, bangtail -- (a horse bred for racing)