warn verb Stress: first syllable 🤍 Save Syllables: warn (1) English Definition Inform someone in advance of an impending danger or problem. Example Sentence The police warned us about the danger. US IPA /wɔːrn/ 🔊 Listen US UK IPA /wɔːn/ 🔊 Listen UK Synonyms alert caution advise forewarn notify Antonyms mislead encourage Share this Word Facebook WhatsApp X Telegram Copy Link