Which term represents overbearing pride or arrogance?

The term that represents overbearing pride or arrogance is "hubris." This concept originates from Greek tragedy and is often associated with characters who exhibit excessive pride, leading them to disregard the limitations of their humanity and ultimately face downfall or punishment. Hubris conveys not just a sense of pride but a dangerous level of self-confidence that can blind individuals to their faults or the advice of others. It reflects a failure to recognize one’s limitations, making it a powerful theme in literature, particularly in relation to tragic heroes.

The other terms provided do not capture this meaning. "Idyll" refers to a simple, peaceful, or picturesque scene, typically in nature or in a rural setting. "Imbroglio" denotes a complicated or confusing situation, often involving a misunderstanding or entanglement. "Imperious" describes someone who is commanding or domineering, but it does not specifically convey the idea of overbearing pride; instead, it focuses on the nature of authority and control without the connotations of excessive pride that hubris encapsulates.