The word "sissings" is spelled with a double s followed by the letters "ings." The IPA phonetic transcription of the word is /ˈsɪsɪŋz/. The first syllable is pronounced with a short "i" sound, followed by a double "s" sound. The second syllable is pronounced with a long "e" sound, followed by the letters "ings" pronounced as "ingz." The spelling of this word accurately reflects its pronunciation, making it easier for readers to correctly pronounce and understand its meaning.