The spelling of the word "bauder" can be explained using the International Phonetic Alphabet (IPA). The first sound in "bauder" is a voiced bilabial stop /b/. The second sound is an unvoiced dental fricative /θ/. The third sound is a voiced alveolar stop /d/. The fourth sound is a rounded back vowel /u/. Lastly, the fifth sound is an unvoiced alveolar plosive /t/. The spelling of "bauder" may seem odd, but phonetically it is a combination of unique sounds that make up the word.