bumptious

adj

Etymology: Probably from bump, on the pattern of words like fractious or presumptious.

1. Obtrusively pushy; self-important; self-assertive to a pretentious extreme.

   “[…”

   “From another point of view, it was a place without a soul. The well-to-do had hearts of stone; the rich were brutally bumptious; the Press, the Municipality, all the public men, were ridiculously, vaingloriously self-satisfied.”