Correct spelling for the English word "Unsheriff" is [ʌnʃˈɛɹɪf], [ʌnʃˈɛɹɪf], [ʌ_n_ʃ_ˈɛ_ɹ_ɪ_f] (IPA phonetic alphabet).
There is no word "unsheriff" in common usage, so it does not have an established etymology. However, if we analyze the term based on its parts, we can infer its meaning.
The prefix "un-" is typically used to denote a negation or reversal of the word it is attached to. In this case, "un-" would imply the opposite of a sheriff.
The word "sheriff" originates from Old English. It derives from the Old English term "scīrgerēfa", where "scīr" means "shire" (an administrative division in England) and "gerēfa" means "reeve" or "governor".
Putting the parts together, "unsheriff" would imply the absence or negation of a sheriff—a person who is not a sheriff, or someone who has been removed from the position.