The word "un sanctioned" refers to something that has not been approved, authorized, or endorsed by an official authority or organization. Antonyms for "un sanctioned" include terms such as "sanctioned", "approved", "authorized", "endorsed", "validated", "licensed", "ratified", "authorized", and "accredited". These words are often used to describe actions or events that have been given official approval, such as a sanctioned sports event or an approved business initiative. They convey a sense of legitimacy and credibility that contrasts with the uncertainty and doubt associated with un sanctioned activities. In summary, the opposite of un-sanctioned is sanctioned.