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Definition of whitelist

whitelist

/ˈwaɪt.lɪst/
white · list

Plural:whitelists
•
Past Simple:whitelisted
•
Past Participle:whitelisted
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Present Participle:whitelisting
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whitelist Lexical Profile

whitelist Game Scores & Validity

• noun

1

In computing, an explicit index of approved email addresses, IP addresses, domain names, or applications that are permitted to bypass security filters.

Example

"Please add our domain to your email whitelist so important notifications do not end up in your spam folder."


2

A list or register of people, organizations, or items that have been approved, trusted, or granted special access and privileges.

Example

"Only contractors on the official whitelist were granted entry to the research facility."

Antonyms
View all antonyms for whitelist

• verb

1

To place a person, organization, or digital entity (such as an email address, IP address, or software program) on an approved list to grant access or privileges.

Example

"The network administrator whitelisted the new accounting software so the firewall would stop blocking its updates."

Synonyms
View all synonyms for whitelist
Antonyms
View all antonyms for whitelist

Word Nuance & Usage

In modern software development and IT contexts, terms like 'allowlist' and 'passlist' are increasingly favored over 'whitelist' to promote inclusive, color-neutral technical terminology.

Word Origin & Etymology

Formed in the mid-19th century as a compound of 'white' and 'list', modeled as the direct opposite of 'blacklist'.

Cite this Entry


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