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Definition of authenticate

authenticate

/ɔːˈθɛn.tɪ.keɪt/
au · then · ti · cate

Adverb:authentically
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Adjective:authentic
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Past Simple:authenticated
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Past Participle:authenticated
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Present Participle:authenticating
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authenticate Lexical Profile

authenticate Game Scores & Validity

• verb

1

To verify the identity of a user, device, or process (especially in computing and digital security) before granting access to a system.

Example

"The banking portal requires customers to authenticate their login attempt using a one-time security code."


2

To prove or show something (such as a document, artwork, or historical artifact) to be true, genuine, or valid.

Example

"The museum hired an independent team of art historians to authenticate the newly discovered painting."

Synonyms
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Antonyms
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Word Nuance & Usage

In computing and security contexts, do not confuse 'authenticate' (verifying who a user is) with 'authorize' (determining what permissions an authenticated user has).

Word Origin & Etymology

Formed in the mid-17th century from Medieval Latin authenticatus, past participle of authenticare ('to confirm the validity of'), ultimately from Ancient Greek authentikos ('original, genuine, principal'), from authentes ('one acting on one's own authority').

Cite this Entry


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