How to Use foul up in a Sentence

foul up

verb
  • Got there late, being fouled up en route by getting on wrong tube.
    Phoebe Wall Howard, Detroit Free Press, 28 May 2018
  • That’s how the Patriots can score, by fooling the other team or forcing it to foul up.
    BostonGlobe.com, 18 Nov. 2019
  • Bill Plaschke warns that Rob Pelinka must not foul up again, as if Pelinka has anything to do with any of this.
    latimes.com, 21 June 2019
  • That is, one can’t simply be plugged into the other without fouling up the picture.
    Popular Mechanics Editors, Popular Mechanics, 20 July 2019
  • Pike doesn't have a lot of chances to foul up with his dad, Dayton head football coach Jeff Nations, following his progress.
    David Taylor, Houston Chronicle, 17 Feb. 2018
  • Multiple automakers are about to start tests of driverless cars in which there is no one behind the steering wheel waiting to take over in case the car fouls up.
    Nathan Bomey, USA TODAY, 29 Jan. 2018
  • Within hours of opening, Brightline’s online reservation system fouled up, showing that tickets were sold out for weeks.
    Wayne K. Roustan, Sun-Sentinel.com, 12 Jan. 2018
  • If his mechanics are fouled up and if his pocket presence is askew, those aren’t little things, and no one other than hot-take artists are saying he is seriously maligned.
    Cam Inman, The Mercury News, 13 Sep. 2019
  • Fields’s recruitment was an enigma before injuries fouled up the quarterback situations of two programs high on his list, and now there’s even less clarity about his future.
    Chris Johnson, SI.com, 6 Sep. 2017
  • Conversations on hate speech and the toxic language fouling up online debates about the elections were potential fodder for a separate machine-learning research project.
    Dune Lawrence, Bloomberg.com, 21 Sep. 2017
  • Radiation fouled up their microprocessors and camera components.
    Krista Stevens, Longreads, 1 May 2018

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'foul up.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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