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Definition of blacklist

blacklist

/ˈblæk.lɪst/
black · list

Plural:blacklists
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Adjective:blacklisted
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Past Simple:blacklisted
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Past Participle:blacklisted
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Present Participle:blacklisting
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blacklist Lexical Profile

blacklist Game Scores & Validity

• noun

1

A list of people, organizations, or countries that are regarded as unacceptable or untrustworthy and should be excluded, boycotted, or avoided.

Example

"Several screenwriters were placed on the Hollywood blacklist during the 1950s and struggled to find work under their own names."


2

In computing, an access control list of IP addresses, email domains, programs, or users that are denied access to a network or system.

Example

"The company's email server automatically checks incoming messages against a global spam blacklist."

Synonyms
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• verb

1

To put a person, organization, or entity on a blacklist so as to exclude, boycott, or deny them employment or privileges.

Example

"The trade association threatened to blacklist any supplier found violating the new environmental standards."

Synonyms
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Antonyms
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Word Nuance & Usage

In modern computing and corporate style guides, terms such as 'blocklist' or 'denylist' are increasingly preferred over 'blacklist' to use more neutral, purely functional terminology.

• Rhymes for blacklist

Word Origin & Etymology

First recorded in the early 17th century as 'black list,' combining 'black' (historically associated with disgrace, censure, or misfortune) and 'list.' It was famously used by King Charles II of England to record the regicides who had condemned his father, Charles I, to death.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Blacklist. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/blacklist
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