What term describes the action of lowering someone in rank or esteem?

The term that describes the action of lowering someone in rank or esteem is "abase." To abase someone means to belittle them or to deprive them of dignity and respect. This term encompasses the idea of causing someone to feel inferior or diminished in status, which aligns perfectly with the context of the question.

When one abases another, it implies a deliberate act that diminishes their standing, whether socially, professionally, or personally. Hence, using this term accurately captures the essence of the action of lowering someone in terms of rank or esteem. Understanding this term is essential, as it often appears in discussions about self-worth, respect within relationships, and power dynamics.