The word 丢人 is formed by combining the concept of "losing" or "misplacing" (丢) with the concept of a "person" (人) to create a vivid, figurative meaning. It visually conjures the image of a person losing or discarding something vital, specifically, their social face or dignity, in front of others. This formation directly evokes the cultural idea of public shame, where one's honorable standing is metaphorically "lost" or "thrown away" due to embarrassing actions, thereby instantly communicating the sense of bringing disgrace upon oneself.