The spelling of the word "Flemister" can be explained using the International Phonetic Alphabet (IPA) phonetic transcription. The word is pronounced as /flɛmɪstər/, with stress on the second syllable. The "Fle-" is pronounced with the "eh" sound, the "m" is pronounced as "m", and "is-" is pronounced with a short "i" and "s" sound. The "ter" ending is pronounced with the "er" sound. Overall, the spelling of "Flemister" follows the expected English language conventions for sound-to-letter correspondences.