The word "TASSUM" is spelled with the phonetic transcription /tæsəm/. The first syllable is pronounced with the "æ" vowel sound, as in "cat." The "s" and "m" consonants are pronounced as usual. The second syllable features the "ə" vowel sound, which is a schwa sound that is often pronounced like the "uh" sound in "about." The spelling of "TASSUM," while it may be unconventional, accurately reflects its pronunciation using IPA phonetic transcription.