The spelling of the word "most unadept" can be a bit tricky. The first syllable of "unadept" is pronounced like "un-" with a schwa sound (ə), making it sound like "uhn." The second syllable is pronounced with a long "a" sound, like "adept." Therefore, the whole word is pronounced "mohst uhn-uh-dept." "Unadept" means lacking skill or ineffective, and when "most" is added to it, it emphasizes the extreme level of incompetence.
The word "unadept" is a formation from the prefix "un-" meaning "not" and the adjective "adept" meaning "skilled" or "proficient". The prefix "un-" is derived from Old English "un-" or "on-", which has a negative or reversal meaning. "Adept" comes from Latin "adeptus", the past participle of "adipisci", meaning "to attain" or "to achieve".
So, the combination "unadept" was likely created by adding the prefix "un-" to the word "adept" to indicate a lack of skill or proficiency. However, it is important to note that "most unadept" is not a common or widely recognized phrase.