"Demonianisms" is a rare word with a complex spelling. The IPA phonetic transcription for this word is /dɪˌmoʊniənˈɪzəmz/. The first syllable is pronounced "di" with a short "i" sound. The second syllable is "mo" with a long "o" sound. The third syllable is "ni" with a short "i" sound. The fourth syllable is "an" with a long "a" sound. The final syllable is pronounced "iz-uhmz" with a stress on the second syllable. This word refers to beliefs or practices related to demons.