blow a/the deal

blow a/the deal

To ruin, spoil, or otherwise botch an agreement, often in business dealings. If the boss finds out I was the one who the big deal at the eleventh hour, I'll be fired for sure. You'll blow a deal every now and again. It's extremely disappointing, but it's just part of life in this business.
See also: blow, deal
Farlex Dictionary of Idioms.
See also:
  • 11th
  • at the eleventh hour
  • eleventh
  • eleventh hour, at the
  • queer somebody's pitch
  • queer someone's pitch
  • queer the/(one's) pitch
  • botch up
  • piss on (one's) party