The letter O stands for several different sounds in English: the short "o" of "hot", the "aw" of "caught", the long "oh" of "go", and even the "uh" of "money", "mother" and "come". Indian English rounds its O vowels fully, merges "cot" and "caught", and some speakers follow the spelling and say "money" or "company" with a real "o". If you learned American English, a fully rounded "hot" or a "kom-pa-ny" may surprise you for a moment. What you will learn: • Four sounds for the letter O • The rounded "O" of "hot" • Cot and caught are the same • Full rounded O from some eastern speakers • Spelling O for the "uh" sound: "kom-pa-ny" • O before R • "know", "now" and "knowledge" • Practice: decode the sentence • Listening strategies • Self-check questions to test your ear Level: B1–B2. Self-study: listen, then take the quizzes. Audio voiced with AI from an original script by Dr. Rashmi R Nair.