noun
bureaucratic airs; official manner
Describes someone acting with the self-important, condescending attitude stereotypical of a bureaucrat or official. Often used in the phrase 役人風を吹かせる.
彼は窓口で役人風を吹かせて、なかなか手続きを進めてくれなかった。
He put on bureaucratic airs at the counter and wouldn't process the paperwork quickly.
官僚的 is a more formal, descriptive adjective meaning 'bureaucratic' in a systemic sense, while 役人風 specifically refers to the personal attitude or behavior of acting like a self-important official.
Compound of 役人 (official, bureaucrat) and 風 (style, manner, air). The exact historical derivation is uncertain, but the word transparently means 'official-like manner'.