knock noun verb Stress: first syllable 🤍 Save Syllables: knock (1) English Definition To strike a surface noisily to attract attention. Example Sentence Knock on the door before entering the room. US IPA /nɑːk/ 🔊 Listen US UK IPA /nɒk/ 🔊 Listen UK Synonyms tap rap strike hit bang Antonyms assist soothe Share this Word Facebook WhatsApp X Telegram Copy Link