The spelling of the word "wittwer" can be explained using the International Phonetic Alphabet (IPA) transcription. It is pronounced as /ˈwɪtvər/. The first syllable is pronounced as "wit" with a short "i" sound followed by a soft "t." The second syllable is pronounced with a short "u" sound and a soft "v" sound. The phonetic transcription helps to understand the correct pronunciation and spelling of the word, making it easier to communicate effectively.