The word "Jiannini" is often misspelled due to its unusual combination of letters. It is pronounced as /dʒɑːnini/ according to the International Phonetic Alphabet. The first syllable is pronounced similar to the 'j' in "jeep" and the second syllable is pronounced like "ahh." The double "n" in the final syllable is pronounced nasally, similar to the "n" in "sing." Therefore, the correct spelling of this word is "Jiannini."