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authenticate

verb
au·​then·​ti·​cate | \ ə-ˈthen-ti-ˌkāt How to pronounce authenticate (audio) , ȯ-\
authenticated; authenticating

Definition of authenticate

transitive verb

: to prove or serve to prove to be real, true, or genuine authenticate a document
Other Words from authenticate Synonyms Choose the Right Synonym More Example Sentences Learn More about authenticate

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Other Words from authenticate

authenticator \ -​ˈthen-​ti-​ˌkā-​tər How to pronounce authenticator (audio) \ noun

Choose the Right Synonym for authenticate

confirm, corroborate, substantiate, verify, authenticate, validate mean to attest to the truth or validity of something. confirm implies the removing of doubts by an authoritative statement or indisputable fact. confirmed the reports corroborate suggests the strengthening of what is already partly established. witnesses corroborated his story substantiate implies the offering of evidence that sustains the contention. the claims have yet to be substantiated verify implies the establishing of correspondence of actual facts or details with those proposed or guessed at. all statements of fact in the article have been verified authenticate implies establishing genuineness by adducing legal or official documents or expert opinion. handwriting experts authenticated the diaries validate implies establishing validity by authoritative affirmation or by factual proof. validated the hypothesis by experiments

Examples of authenticate in a Sentence

The signature has been authenticated. a jeweler authenticated the diamond as real

Recent Examples on the Web

 It was authenticated by Virginie Cauchi-Fatiga, a leading Delacroix expert, following X-ray and infrared testing. — Jason Daley, Smithsonian, "Lost Version of Delacroix Masterpiece Goes on View After Being Found in Paris Apartment," 21 June 2019 The company uses a cryptographic technique to convert users’ passwords into a unique string of letters and characters, called a hash, which is stored on Twitter’s servers and used to authenticate login attempts. — Georgia Wells, WSJ, "Twitter Finds a Bug and Tells Users to Change Their Passwords," 3 May 2018 That includes Sign In with Apple, which can now be used to authenticate with a Parallels account. — Samuel Axon, Ars Technica, "Parallels Desktop 15 for Mac moves to Metal for DirectX 11 and more," 13 Aug. 2019 Levinson followed that with the scabrous HBO series The Wire (2002–8), which introduced a roster of new-generation black stereotypes to authenticate the social fears first put into law through the 1994 Clinton crime bill. — Armond White, National Review, "The Baltimore Culture Wars: A History," 31 July 2019 Pureval will hold a press conference Friday morning to discuss details of the new measures employed to authenticate judicial orders. — Max Londberg, Cincinnati.com, "Forged Hamilton County judicial orders discovered, prompting investigation, Aftab Pureval says," 25 July 2019 And LVMH Moët Hennessy Louis Vuitton , the biggest luxury company in the world, is launching its own blockchain platform that creates digital twins to authenticate presold goods. — Carol Ryan, WSJ, "The RealReal Could Be a Victim of Its Own Success," 28 June 2019 Beneath the screen itself is the fingerprint reader, a slick way to authenticate your identity without scanning your face or taking up space on the device surface. — Time, "Review: A Cheaper Android Phone Without (Many) Sacrifices," 25 June 2019 The Senate bill includes a provision allowing callers to authenticate themselves. — Jesse Naranjo, WSJ, "House Panel Advances Robocall Bill," 25 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'authenticate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of authenticate

1613, in the meaning defined above

History and Etymology for authenticate

see authentic

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More Definitions for authenticate

authenticate

verb
How to pronounce authenticate (audio)

English Language Learners Definition of authenticate

: to prove that something is real, true, or genuine : to prove that something is authentic

See the full definition for authenticate in the English Language Learners Dictionary

authenticate

verb
au·​then·​ti·​cate | \ ə-ˈthen-ti-ˌkāt How to pronounce authenticate (audio) \
authenticated; authenticating

Kids Definition of authenticate

: to prove or serve as proof that something is authentic

authenticate

transitive verb
au·​then·​ti·​cate
authenticated; authenticating

Legal Definition of authenticate

1 : to prove or serve to prove that (something) is genuine especially : to prove that (an item of evidence) is genuine for the purpose of establishing admissibility
2 : to make (a written instrument) valid and effective by marking especially with one's signature authenticate a check

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