was the only person in New York who might be called, without intent to malign, an Ultracrepidarian critic. It was of the very nature of his job to find fault with small and insignificant details. -- The American Gun Mystery by Ellery Queen.
of a critic, giving opinions on something beyond his or her knowledge
Hyphenation
of a critic, gi·ving opinions on some·thing be·yond his or her knowl·edge