The word "Acherois" is spelled with an "o" in the second syllable, even though it might seem like it should be spelled with an "e" based on its pronunciation. This is because the word is derived from the French word "achéroïde," which has an "o" sound in the second syllable. In IPA phonetic transcription, the word is spelled /aʃərwa/, with the stress on the second syllable. The spelling of the word might seem confusing, but it is consistent with its French origin.