The word "more inerrable" is spelt with the prefix "more" added to the adjective "inerrable", which means incapable of error. The pronunciation of "inerrable" is /ɪˈnɛrəbəl/, with emphasis on the second syllable. The prefix "more" is pronounced /mɔː(r)/. Therefore, the correct pronunciation of "more inerrable" should be /mɔː(r) ɪˈnɛrəbəl/. This word would be used to express that something is even more incapable of making a mistake than it was before.
The word "more inerrable" does not have an established etymology as it is not a commonly used word or recognized in mainstream English vocabulary. However, we can break down the components of "more inerrable" to understand the possible origins:
1. "More": This word comes from Old English "māra" and has its roots in Proto-Germanic "*maizon" which means "greater" or "more".
2. "Inerrable": This word is derived from the adjective "inerrant", which in turn comes from the Latin "inerrantem", a form of the verb "inerrare" meaning "to wander" or "to go astray". Inerrant means "incapable of making mistakes" or "free from errors".