Definition: In a word… ultracrepidarian: (n., adj.) a person who gives opinions beyond his scope of knowledge. “Nonexpert opinion or assumed authority – Don’t be swayed (or try to sway someone else) based on the opinion of an unqualified authority. The Air Force is chock-full of people who, because of their position or authority in one field, are quoted on subjects in other fields for which they have limited or no experience.”
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