to a great extent or degree

बड़ी मात्रा या डिग्री तक

English Usage: The movie was so interesting!

Hindi Usage: फिल्म इतनी रोचक थी!

used to emphasize something

इसलिए

English Usage: That was a so good movie!

Hindi Usage: वह इतनी अच्छी फिल्म थी!