~ぶる (pretend to be / put on airs)

The suffix ~ぶる attached to a noun or adjective stem to mean 'pretend to be X / act X / put on X-airs.' Always implies the quality is feigned rather than genuine. 偉ぶる ('act important'), 上品ぶる ('put on refined airs'), 賢ぶる ('act smart'), 知ったかぶる ('pretend to know'), 学者ぶる ('play the scholar').