The spelling of the word "Achaovan" follows the International Phonetic Alphabet (IPA) transcription system, which is a standardized way of representing the sounds of spoken language. In IPA, "Achaovan" is spelled as /ˈæk.ɑ.vən/. This indicates that the "A" is pronounced as "æ," the "ch" is pronounced as "k," and the stress is on the second syllable. The "o" is pronounced as "ə," which is the schwa sound. Therefore, the correct pronunciation of "Achaovan" is ak-a-vun.