The word "玷污" is formed by combining the characters "玷" and "污"; "玷" originally refers to a flaw or blemish on jade, extending to mean staining or defiling, while "污" means dirt or pollution, indicating making something unclean. Together, they create a compound meaning where "玷" contributes the idea of blemishing and "污" emphasizes soiling, resulting in the sense of staining, sullying, or defiling, often used in moral or metaphorical contexts.