The spelling of the word "reiffel" can be explained using the International Phonetic Alphabet (IPA) transcription. It is pronounced as /ˈraɪfəl/ which means the first syllable is pronounced as "rye" with a long "i" sound, the second syllable is pronounced as "fuh" with a short "u" sound and the final syllable is pronounced as "ul" with a neutral "ə" sound. The spelling of "reiffel" reflects the pronunciation of the word, mirroring the sounds used in the IPA transcription.