The English /v/ , however, is labio-dental (upper teeth touching lower lips), a sound distinct for the English speaker but indistinguishable from /w/ for Hindi speakers. In fact, that’s the only retroflex sound in English, Hindi /r/ , however, is generated at the alveolar ridge (the ridge right behind your upper teeth). Fun fact: The Sanskrit ऋ is pronounced /ɹ/ English /t/ vs Hindi /t/त - The English T sound is unique in many ways.