The spelling of the word "Anastos" is quite straightforward when using the International Phonetic Alphabet (IPA) transcription. It is pronounced [ænˈæstɒs], where the first syllable "an" is pronounced with a short "a" vowel sound, followed by the stressed "as" syllable with a long "a" vowel sound. The "t" is pronounced with a soft "t" sound, while the final "os" syllable is pronounced with a short "o" vowel sound and a soft "s." Overall, the IPA transcription helps to better understand the spelling of this word.