Other forms: delegitimizing; delegitimized; delegitimizes
When we delegitimize something, we remove or reduce its legal status or validity. To promote safe driving, we have delegitimized speeding and riding without a fastened seatbelt.
If officials decide to delegitimize a dangerous chemical, they may ban it from use in consumer products to keep the public safe. Delegitimize can also refer to trying to undermine the prestige or authority of someone or something. For instance, accusations of wrongdoing against someone can delegitimize that person's reputation and work, even if the allegations are proven to be untrue later on.