The spelling of the word "ISSAS" is a bit tricky to decipher without proper knowledge of the IPA phonetic transcription. The word "ISSAS" is pronounced as /ˈɪsæs/, where the first syllable is pronounced as "is" with a short 'i' sound, and the second syllable "sas" is pronounced with a short 'a' sound. The letter 's' is used thrice in this word, but it is important to note that the second 's' is stressed, which makes it sound different from the other two.