The spelling of the word "jefferis" can be confusing due to its unusual combination of letters. However, its pronunciation can be broken down into IPA phonetic transcription as ˈdʒɛfərɪs, which can help clarify its spelling. The "jeff" sound is represented by the letters "j" and "f", while the "eris" sound is represented by the letters "er" and "is". This unique combination of letters makes "jefferis" a distinctive word that can be challenging to spell correctly without the help of IPA phonetics.