foul up
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
There remains the possibility that the tank will still explode or rupture in a massive leak that could send the chemical to foul up waterways and the ocean.
From Los Angeles Times ● May 23, 2026
Self-deleting messages can also foul up long-established record-retention practices and, for some federal employees, they may constitute a violation of the law.
From New York Times ● Jul. 6, 2017
To be reverse coach of the year, you have to foul up what you shouldn’t, like Blockbuster once passing on buying Netflix.
From Washington Post ● Dec. 25, 2016
This winter, he says, there’s no El Nino to foul up the weather prognostication.
From Washington Times ● Aug. 14, 2016
Some inmates, for example, would try to flush something huge, like a bedsheet, in hopes it might foul up the entire block’s plumbing or allow them to flood the gallery.
From "Newjack: Guarding Sing Sing" by Ted Conover
