Choose the perfect synonym or antonym for the word To notify someone about a danger or potential problem in order to prevent harm or prepare them.
Warn
/wɔːn/Synonyms:
Antonyms:
Examples:
"Be careful," her mother warned her once again.
That's a warning sign if ever there was one.
"Say less," Spike warns.
Etymology:
The word warn comes from the Old English warnian, meaning to alert or give notice. Its related to the Old High German warnon and the Old Norse varna.'
Usage Statistics:
46 mentions per 1 million words 
Hint: Frequency according to COCA
Often
Hint: Frequency according to COCA
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