When we're talking about hubristic pride or hubris synonyms would be arrogant or conceited. The peacock is the perfect image for this like you are maybe seizing admiration as opposed to earning admiration and so you have the sense of an inflated it's like a balloon It's like being pumped up but also there's a fragility there. This is related to bad things like selfish behavior and narcissism.
Is pride an emotion? Where’s the line between self-esteem and hubris? And what does Stephen have against peacocks?
Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/