noun Informal.

a condition of difficulty or disorder brought on by inefficiency, stupidity, etc.
failure of a mechanical part to operate correctly.
a person who habitually makes mistakes; bungler.

Nearby words

  1. foul pole,
  2. foul shot,
  3. foul tip,
  4. foul up,
  5. foul-mouthed,
  6. foulage,
  7. foulard,
  8. foulbrood,
  9. fouled-up,
  10. foulie

Origin of foul-up

1950–55, Americanism; noun use of verb phrase foul up Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for foul-up

  • He worked on the line next to Ernie, and had witnessed the foul-up this morning.

    All Day Wednesday|Richard Olin
  • Apparently the foul-up is on the other side of the firewall.

    The Bramble Bush|Gordon Randall Garrett