Meaning & use
warn
To tell someone about a possible danger, problem, or unpleasant consequence so they can avoid or prepare for it.
See it in a sentence
The lifeguard warned swimmers about the strong current near the rocks.
She warned her brother that the bridge ahead was closed for repairs.
A note on using this word
Warn is often followed by about or of, as in warn someone about a risk, or by a that-clause describing the danger.
Words with a similar meaning
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Words with an opposite meaning
reassure
Make it your own
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