blacklist
noun [ C ]
uk/ˈblæklɪst/ usa list of companies, organizations, or people that have a bad reputation or have done something illegal and that other organizations do not do business with because of this:
The bank is now on a blacklist of businesses targeted for future investigation.
blacklist
verb [ T ]
uk/ˈblæklɪst/ usto decide that you will not do business with an organization or person:
blacklist sb for sth They found themselves blacklisted for credit after being declared bankrupt.
blacklisted companies