blacklist
1. noun A list of names of people, groups, or organizations who are to be banned, censured, or are under suspicion, as in politics, law enforcement, business, labor unions, etc. The country's government maintains a blacklist of people it deems dangerous. The company circulates a blacklist every year among its employees so they know not to offer jobs or information to people whose views run contrary to its values.
2. verb To put someone on a blacklist, that is, a list of names of people, groups, or organizations who are to be banned, censured, or are under suspicion. The influential writer was blacklisted early in her career for denouncing certain policies of the federal government. If you keep getting into fights there, the bar will eventually blacklist you.