Neisler is a surname that can be spelled using the International Phonetic Alphabet as /ˈnaɪslər/. The first syllable, "Nai," uses the diphthong "ai" to represent the sound /aɪ/. The second syllable, "slər," represents the consonant cluster /sl/ through the use of the letter "s" and the schwa sound represented by the symbol "ə". The pronunciation of "neisler," therefore, would be "Nai-sler" with the primary stress on the first syllable.