There are plenty of synonyms for the phrase "damaging one's good name." These include words such as tarnishing, sullying, besmirching, and defaming, which all refer to actions that hurt one's reputation. Other synonyms include scarring, tainting, blemishing, and smearing, which carry similar negative connotations. When someone engages in behavior that harms their good name, they risk losing the trust and respect of others, as well as their own sense of self-worth. Therefore, it's important to be mindful of our words and actions and strive to maintain a positive reputation in both our personal and professional lives.