blacklist

From black +‎ list.

• IPA^(key): /ˈblæklɪst/

• Audio (US)

  (file)

blacklist (plural blacklists)

1. (law) A list or set of people or entities to be shunned or banned.

   The software included a lengthy blacklist of disreputable websites to block.

• blocklist

• greylist
• whitelist

blacklist (third-person singular simple present blacklists, present participle blacklisting, simple past and past participle blacklisted)

1. (transitive) To place on a blacklist; to mark a person or entity as one to be shunned or banned.
   • 2013 August 10, “A new prescription”, in The Economist, volume 408, number 8848:

     As the world's drug habit shows, governments are failing in their quest to monitor every London window-box and Andean hillside for banned plants. But even that Sisyphean task looks easy next to the fight against synthetic drugs. No sooner has a drug been blacklisted than chemists adjust their recipe and start churning out a subtly different one.

   You can blacklist known spammers with that button.

• blacklister

• stickball