Characterized by an exaggerated show of dignity or self-importance
She let out a self-important sigh as she turned; ready to dismiss the pesky newcomer.
The futile and thriftless yet busy and self-important king was one of those sovereigns who irritate their subjects into opposition by injudicious activity.
Well, doesn't that sound just a little self-important?
censorious self-important half-witted prudes for guidance.
Everyone in fact likes the Dave Gorman's of this world because they make the mundane look extraordinary, and the self-important mundane.