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

This winter, he says, there’s no El Nino to foul up the weather prognostication.

From Washington Times • Aug. 14, 2016

We didn't foul up or shrink from the daring option.

From The Guardian • Jul. 28, 2012

I partly blame all those dopes that clap their heads off--they'd foul up anybody, if you gave them a chance.

From "The Catcher in the Rye" by J. D. Salinger