verb

warned

warned, cautioned, notified

The sign warned of falling rocks.

The sign warned of falling rocks.

I warned you not to go there.

I warned you not to go there.

The police warned everyone to stay inside.

The police warned everyone to stay inside.

warn ((sb.)) ((about/of sth.)) to tell (sb.) about a possible danger The sign warned of falling rocks.

warn ((sb.)) ((that...)) to inform (sb.) that something bad may happen The doctor warned me that I should rest.

warn ((sb.)) ((not to-inf)) to advise (sb.) not to do something I warned you not to go there.

Synonyms: cautioned, advised, alerted; Antonyms: reassured, encouraged

From Old English 'warnian', meaning 'to take heed'. This is the past tense and past participle of 'warn'.

This is the past form of 'warn'. The '-ed' ending indicates an action that has already happened.

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