The correct spelling of the word "Leiser" can be confusing due to the sound of the first syllable "Lei". It is important to note that the "ei" diphthong is pronounced as /aɪ/. Therefore, the word should be spelled and pronounced as "L-ai-ser". The second syllable is pronounced as /sər/. The word "Leiser" could be misleading since it doesn't follow the typical spelling patterns of English. It is crucial to pay attention to the pronunciation and phonetic transcription for accurate spelling.