The spelling of the word "bogardus" can be explained using the International Phonetic Alphabet (IPA). The initial sound is represented by the voiced bilabial fricative /b/. After that, the first syllable is pronounced as /ˈboʊ/, with a long open-mid back rounded vowel /o/ and a diphthong /ʊ/ at the end. The second syllable is pronounced as /ˈɡɑrdəs/, with a voiced velar plosive /ɡ/ and a schwa /ə/ sound in the second position. Overall, the correct spelling of the word depends on understanding the pronunciation of each sound.