bumptious

adj

1. (UK)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.”

   “She could stand it no longer. It was full of prying old women, she said, who stared in one's face, and of bumptious young men who trod on one's toes.”

   “No doubt of it, Edmund was at grips with that bumptious little hairy dog. They were going it at the very top note of sadistic fury, screaming and snip-snapping in such a lightning mixture of black and white murder that the eye could not follow it.”