bumptious

Bumptious is an adjective used to describe someone who is conceited, arrogant, or self-important. It conveys a sense of overconfidence and an overly proud demeanor, often accompanied by an exaggerated sense of one's own worth or importance. A bumptious person might speak loudly, boast about their accomplishments, or act as if they are superior to others.

The word typically carries a negative connotation, suggesting that the person's behavior is unpleasant or irritating to those around them. It implies a lack of humility and an awareness of others' feelings or perspectives. While often used to describe individuals, the term can also be applied to attitudes or behaviors that exhibit such qualities, such as a bumptious statement or a bumptious display of wealth. The origin of the word is somewhat obscure, but it is thought to have emerged in the 19th century, possibly related to words suggesting puffing up or swelling with pride.