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forewarn

American  
[fawr-wawrn, fohr-] / fɔrˈwɔrn, foʊr- /

verb (used with object)

  • forewarns,
    present (3rd person singular)
  • forewarned,
    past participle,  past
  • forewarning
    present participle
  1. to warn in advance.

    Synonyms:
    prewarn, alert, admonish, caution

forewarn British  
/ fɔːˈwɔːn /

verb

  1. (tr) to warn beforehand

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Present

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Etymology

Origin of forewarn

First recorded in 1300–50, forewarn is from the Middle English word forwarnen. See fore-, warn

Explanation

When you forewarn your friend about the pop quiz in math, you let her know beforehand that it's happening. You should forewarn your friends about the highway construction that might slow them down when they come to visit you, and you could forewarn your shy exchange student that your dad likes to interrogate people at the dinner table. The verb forewarn combines fore, as in "before" or "early," with warn, "inform of danger or problems." You may have heard of the proverb "forewarned is forearmed," which means you're at an advantage if you know what's coming in advance.

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Vocabulary lists containing forewarn

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.

See Examples For:

It is vital the devices stay hidden, she said, adding: "We would urge the government to forewarn the public that alerts might be issued, when possible."

From BBC Aug. 17, 2026

Pilots can then forewarn passengers and crew, encouraging them to take their seat and buckle up before a jolt hits.

From Scientific American Jul. 1, 2023

Fed Chair Jerome Powell earlier this week also outlined the longer-term shifts that may forewarn a long period of elevated interest rates and inflation that responds only slowly to the Fed's restrictive policy.

From Reuters Dec. 2, 2022

We constantly tried to forewarn our partners — but for the most part, they thought it was an exaggeration, an example of Russophobia.

From Salon Apr. 9, 2022

She seemed to always have premonitions of their coming and would forewarn my father.

From "Kaffir Boy: An Autobiography" by Mark Mathabane

When she has audio calls, she forewarns her colleagues she might lose connection.

From BBC May 30, 2026

A frozen opening shot of the exterior of a luxury California home forewarns of the tedium to come.

From New York Times Mar. 18, 2022

Lawrence forewarns readers of his travel writing from Italy.

From Washington Post Sep. 2, 2021

Carl Safina makes a strong case for the supremacy of “Moby-Dick” as a novel in which Herman Melville forewarns of the errors that civilization may make.

From New York Times Jun. 26, 2020

“My brother wears one in a ring. And as he’s a sea captain, the opal forewarns him of ocean storms. He says it has never been wrong.”

From "The Detective's Assistant" by Kate Hannigan

But Great Britain's new sprint sensation forewarned everyone exactly what was coming here.

From BBC Aug. 17, 2026

But be forewarned: A dizzying liftoff doesn’t mean the stock will keep flying.

From Barron's Jun. 9, 2026

On paper, the companies beat Wall Street expectations — but that’s only because analysts were forewarned.

From MarketWatch May 2, 2026

“Everyone should be forewarned on this one,” Dimon says.

From The Wall Street Journal Oct. 15, 2025

Cassidy barked that he had not been forewarned of this.

From "Seabiscuit: An American Legend" by Laura Hillenbrand

The economist once known as Dr. Doom, after forewarning the Japanese crash of the 1990s, said interest rates are likely to break higher soon, taking the stock market with it.

From MarketWatch Jan. 9, 2026

When the demolition crews arrived Monday at the White House, there had been no forewarning.

From Salon Oct. 25, 2025

It may be best to roll it out slowly, with trial periods and plenty of forewarning to markets.

From Barron's Oct. 14, 2025

“Had we had some longer forewarning, we would have been able to do it,” Hong said.

From Los Angeles Times Aug. 2, 2024

So she walked into the kitchen alone and without forewarning to find out what was causing her husband’s outcry.

From "The Great Santini" by Pat Conroy

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