The word "sitsome," which is not commonly used, is spelled as /ˈsɪtsəm/. The "s" sound is followed by a short "i" sound, "t" sound, and then an "s" sound again. The final syllable is pronounced with a schwa /ə/ sound and a nasal /m/ sound. The word is likely an adjective used to describe something that is uncomfortable to sit on. Even though it is not a well-known word, understanding its spelling using IPA phonetic transcription can help in correctly pronouncing and reading other rare words.