duke noun Stress: first syllable 🤍 Save Syllables: duke (1) English Definition A nobleman of the highest hereditary rank. Example Sentence The duke lived in his grand castle. US IPA /duːk/ 🔊 Listen US UK IPA /djuːk/ 🔊 Listen UK Synonyms nobleman lord peer aristocrat Antonyms commoner peasant Share this Word Facebook WhatsApp X Telegram Copy Link