pickback the wrong horse . back the wrong horse {v. phr.} To support a loser. In voting for George Bush, voters in 1992 were backing the wrong horse. Categories: add yours verb Source: A Dictionary of American Idioms 'back the wrong horse' on video Back the Wrong Horse Idiom Meaning - English Expression Videos Idiom #6: Back the Wrong Horse - Learn to Speak American English Idioms - Back the wrong horse English Idiom Back the wrong horse sort: relevance, mode: exact match, q: "back the wrong horse", maxResults: 4, videoEmbeddable: true, videoSyndicated: true, safeSearch: strict, type: video Subscribe to: American IdiomsEnglish Slang Discuss