The spelling of the word "INSTCOMM" can be explained using the International Phonetic Alphabet (IPA) as follows: /ɪnstˈkɑm/. Each symbol represents a specific sound in the English language. "INST" is pronounced with a short "i" sound, followed by "nst" pronounced as "st." "COMM" is pronounced with a short "o" sound, followed by "m" pronounced as "m." Therefore, the complete pronunciation is "in-st-kahm." "INSTCOMM" is a unique word, and its spelling can be difficult to remember without using mnemonic devices.