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Definition of warn

warn

/wɔːrn/
warn

Adverb:warningly
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Adjective:warning
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Past Simple:warned
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Past Participle:warned
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Present Participle:warning
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warn Lexical Profile

warn Game Scores & Validity

• verb

1

To inform someone in advance of an impending or possible danger, problem, or other unpleasant situation.

Example

"Meteorologists tried to warn coastal residents about the approaching hurricane several days in advance."


2

To advise or urge someone forcefully not to do something in order to avoid negative consequences or penalties.

Example

"The referee had to warn the player twice for unsportsmanlike conduct during the match."

Synonyms
View all synonyms for warn
Antonyms
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Word Nuance & Usage

Should not be confused with its homophone 'worn' (the past participle of 'wear', meaning damaged by use). Syntactically, 'warn' commonly takes an object followed by 'about', 'of', or 'against', or a 'that'-clause or infinitive phrase.

• Rhymes for warn

Word Origin & Etymology

From Old English 'warnian' (to take heed, give notice of impending danger), derived from Proto-Germanic '*warnōną', which is related to Old High German 'warnōn' and shares a root with 'ware' and 'wary'.

Cite this Entry


Wordmom. (2026). Definition of Warn. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/warn
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