The spelling of the word "Milley" can be explained using the International Phonetic Alphabet (IPA) as /ˈmɪli/. The first syllable, "mil," is pronounced with a short "i" sound, similar to the word "milk." The second syllable, "ley," is pronounced with a long "e" sound, like the word "hey." Therefore, the correct spelling of the word is "Milley," with two "l's" and an "e" at the end. It is important to use correct spelling to communicate clearly and effectively.