The word "NIYAAN" is a bit tricky to spell because it consists of sounds that may not be familiar to English speakers. Using the International Phonetic Alphabet (IPA), we can break down the sounds into /ni.jɑːn/. This means that the first syllable is pronounced with a short "i" sound followed by a "y" sound. The second syllable contains a long "a" sound, and the final syllable has a nasal "n" sound. So, to spell "NIYAAN" correctly, one needs to pay attention to each sound and its corresponding letter or letters.