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Blacklist vs Undefined - What's the difference?

blacklist | undefined |

As a noun blacklist

is (legal) a list or collection of people or entities to be shunned or banned.

As a verb blacklist

is to place on a ; to mark a person or entity as one to be shunned or banned.

As an adjective undefined is

lacking a definition or value.

blacklist

English

(wikipedia blacklist)

Noun

(en noun)
  • (legal) A list or collection of people or entities to be shunned or banned.
    • The software included a lengthy blacklist of disreputable websites to block.

    Antonyms

    * greylist * whitelist

    Verb

    (en verb)
  • To place on a ; to mark a person or entity as one to be shunned or banned.
  • * {{quote-magazine, date=2013-08-10, volume=408, issue=8848, magazine=(The Economist)
    • , title= A new prescription , passage=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.}}

    Derived terms

    * blacklister

    Anagrams

    *

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined