The spelling of the word "simmerman" can be explained using IPA phonetic transcription. The word is spelled /ˈsɪmərmən/, with the stress on the first syllable. The "s" is pronounced as /s/ while the "i" is pronounced as /ɪ/. The "m" and "r" are pronounced as /m/ and /r/, respectively. The "e" before "m" is a schwa vowel pronounced as /ə/. The second "m" is pronounced as /m/ and the final "n" as /n/. Overall, the word is pronounced as "SIM-er-man."