verb

warn

to warn, to caution, to advise

They warned us about the bad weather.

They warned us about the bad weather.

I must warn you that the dog bites.

I must warn you that the dog bites.

The sign warns against swimming here.

The sign warns against swimming here.

((sb.)) ((about/of sth.)) to tell (sb.) about a possible danger They warned us about the storm.

((sb.)) ((that...)) to tell (sb.) that something bad might happen I warned him that he would be late.

((sb.)) ((against -ing)) to advise (sb.) not to do something She warned me against trusting him.

((sb.)) ((to-inf)) to tell (sb.) to do or not to do something The police warned people to stay indoors.

Synonyms: caution, advise, alert; Antonyms: reassure, encourage

From Old English 'warnian', meaning 'to take heed' or 'to give notice of danger'.

Imagine a 'warning' sign with a big exclamation mark! It's telling you to be aware.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.