bet on the wrong horse
see back the wrong horse.
Words nearby bet on the wrong horse
bestride, bestrow, bestseller, bestud, bet, bet on the wrong horse, bet one's ass, bet., beta, beta blocker, beta brass
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.