xii noun adjective Stress: first syllable 🤍 Save Syllables: XII (1) English Definition The Roman numeral representing the number twelve (12). Example Sentence The Roman numeral XII is at the top of the clock. US IPA /twelv/ 🔊 Listen US UK IPA /twelv/ 🔊 Listen UK Synonyms twelve dozen 12 Antonyms zero one Share this Word Facebook WhatsApp X Telegram Copy Link