The spelling of "more bosseyed" is correct, despite how it might appear at first glance. The word "bosseyed" is pronounced /ˈbɒs.aɪd/ with the stress on the first syllable, and it means cross-eyed or having eyes that are turned inwards towards the nose. When more is added to the beginning of the word, it means even more cross-eyed. While the word may not be commonly used, it is spelled accurately according to the English language rules.