warned; warning; warns

transitive verb

1
a
: to give notice to beforehand especially of danger or evil
b
: to give admonishing advice to : counsel
c
: to call to one's attention : inform
2
: to order to go or stay away
often used with off
warner noun

Examples of warn in a Sentence

I had been warned about the difficulties of the job. She warned me that the stove was still hot. “This won't be easy,” he warned. Nobody warned me about the dangers. I warned him to be careful, but he didn't listen to me. She warned us not to go too close to the fire.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
By the end of the week, New York City will be one of the major metro areas that could see drenching rain or ice and snow, AccuWeather warned, adding that Philadelphia and Washington, D.C., could see several hours of heavy rain that could cause travel delays. John Bacon, USA TODAY, 28 Jan. 2025 Andreessen, who has advised Trump on tech policy, warned that overregulating the AI industry could stifle U.S. innovation and give China an advantage. Barbara A. Perry, Newsweek, 28 Jan. 2025 The 25,000 survivors were hand-picked by the city’s therapist, played by Sarah Shahi, after Sinatra was warned about a tsunami that would end global civilization. Jackie Strause, The Hollywood Reporter, 28 Jan. 2025 The message warns about unpaid tolls and the possibility of fines, forcing recipients to act quickly. Kurt Knutsson, Cyberguy Report, Fox News, 28 Jan. 2025 See all Example Sentences for warn 

Word History

Etymology

Middle English warnen, going back to Old English wearnian, warnian "to be on one's guard, make aware, put on one's guard," going back to West Germanic *warnōjan- (whence Middle Dutch waernen "to provide with, give notice of a danger," Old High German warnōn), probably causative derivative of Germanic *wara- "cognizant, watchful" — more at ware entry 1

First Known Use

before the 12th century, in the meaning defined at transitive sense 1a

Time Traveler
The first known use of warn was before the 12th century

Dictionary Entries Near warn

Cite this Entry

“Warn.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/warn. Accessed 31 Jan. 2025.

Kids Definition

warn

verb
1
a
: to give notice to beforehand especially of danger or evil
b
: to give advice to : counsel
2
: to order to go or stay away
warned us off their land
warner noun

More from Merriam-Webster on warn

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