sure adjective adverb Stress: first syllable 🤍 Save Syllables: sure (1) English Definition Completely confident that one is right. Example Sentence I am sure that he will come. US IPA /ʃʊr/ 🔊 Listen US UK IPA /ʃɔː/ 🔊 Listen UK Synonyms certain confident positive assured definite Antonyms unsure doubtful uncertain Share this Word Facebook WhatsApp X Telegram Copy Link