on preposition adverb adjective Stress: first syllable 🤍 Save Syllables: on (1) English Definition Physically in contact with and supported by a surface. Example Sentence The book is on the table. US IPA /ɑːn/ 🔊 Listen US UK IPA /ɒn/ 🔊 Listen UK Synonyms upon atop above over Antonyms off under below Share this Word Facebook WhatsApp X Telegram Copy Link