The word "Nistler" is spelled using the International Phonetic Alphabet as /ˈnɪslər/. The first syllable is pronounced as "niss" with a short "i" sound, followed by the consonant cluster "tl" which is pronounced as a single sound with a slight pause in the middle. The final syllable is pronounced with a short "uh" sound, like the "a" in "hut". When writing or pronouncing "Nistler", it is important to pay attention to the t-l combination in the middle to ensure its correct expression.