The word "Sibbell" is not commonly used and may not be recognized by many people. The spelling of this word is based on the pronunciation of its two syllables. The first syllable, "Sib," is pronounced as /sɪb/, with a short "i" sound and a "b" sound. The second syllable, "bell," is pronounced as /bɛl/, with a short "e" sound and a "b" sound. Together, the word "Sibbell" is pronounced as /ˈsɪb.bɛl/, with emphasis on the first syllable.