The word "cassin" is spelled with the letter "c" followed by "a," "s," "s," "i," and "n." It is pronounced /ˈkæsɪn/. The "c" makes a hard "k" sound and the "a" is pronounced with a short "a" sound. The following "s" sounds like a "z" due to the English pronunciation rule called voicing. The "i" is pronounced like a short "i" sound and the last letter "n" is pronounced like /n/. The word "cassin" is not a commonly used word in English.