blacklist
🇺🇸
/ˈblæklɪst/
🇬🇧
/ˈblæklɪst/
A list of names or things that are not allowed or are considered bad by someone in authority.
The company was added to the industry's blacklist after breaking the rules.
To officially refuse to have contact with someone or something because they are considered to be unacceptable or harmful.
The supplier was blacklisted for not meeting safety standards.