What term describes the quality of being pompous or self-importantly arrogant?

The term that best describes the quality of being pompous or self-importantly arrogant is "Pomposity." This word specifically refers to an inflated sense of self-importance or dignity, often characterized by an ostentatious display of one's knowledge, status, or abilities. Pomposity is typically manifested through a grandiose attitude or behavior, which often alienates others and demonstrates a lack of genuine humility.

In contrast, the other terms relate to qualities that are opposite to or do not align with the concept of pomposity. Humility refers to a modest or low view of one's importance, which stands in stark contrast to being pompous. Subservience denotes a willingness to serve or obey others, lacking any sense of arrogance. Modesty, similarly, suggests a lack of vanity or pride, emphasizing a humble approach to one’s capabilities or appearance. All of these options highlight traits that do not exhibit the self-important arrogance that pomposity embodies.