How to spell SISSYIDH correctly?

"Sissyidh" could potentially be corrected to "siddhi", a Sanskrit term meaning "attainment" or "accomplishment", which is commonly used in Hindu and Buddhist traditions. Alternatively, it could be corrected to "siddharth", a name derived from Sanskrit meaning "one who has attained enlightenment" famously known as the name of Gautama Buddha before his enlightenment.