notion noun Stress: first syllable 🤍 Save Syllables: no-tion (2) English Definition A conception of or belief about something. Example Sentence His notion of the situation was completely wrong. US IPA /ˈnoʊʃn/ 🔊 Listen US UK IPA /ˈnəʊʃn/ 🔊 Listen UK Synonyms idea concept belief opinion thought Antonyms fact reality certainty Share this Word Facebook WhatsApp X Telegram Copy Link