authenticate

verb

au·then·ti·cate | \ ə-ˈthen-ti-ˌkāt

, ȯ-\

authenticated; authenticating

Definition of authenticate

: 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

authentication \ ə-ˌthen-ti-ˈkā-shən

, ȯ- \ noun

authenticator \ -ˈthen-ti-ˌkā-tər

\ 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

The second major flaw is that although both coordinates of the public keys are sent during the second phase of the pairing, the protocol authenticates only the x-coordinate. — Dan Goodin, Ars Technica, "Decade-old Bluetooth flaw lets hackers steal data passing between devices," 26 July 2018 Thankfully, experts are already thinking about new ways to authenticate digital pictures. — James Vincent, The Verge, "These faces show how far AI image generation has advanced in just four years," 17 Dec. 2018 When Carlson had the item authenticated by NASA, the space agency kept the bag, claiming rightful ownership of it. — Robert Mccoppin, chicagotribune.com, "Legal fight over 'unprecedented' amount of moon dust follows path of Chicago-area collector who sold hers for $1.8 million," 15 June 2018 The cash, found in 26 different currencies, was authenticated and counted by 22 bank officers, Amar Singh, head of the Commercial Crime Investigation Department, said in a televised press conference Friday. — Laignee Barron, Time, "Cash Found in Bags During a Raid on Property Linked to Malaysia's Former Prime Minister Totals $29 Million," 28 June 2017 What is your timeframe for signing (i.e., authenticating) calls originating on your network? — Jon Brodkin, Ars Technica, "Ajit Pai slams Sprint, Charter, and CenturyLink for poor robocall effort," 6 Nov. 2018 While the Lincoln foundation’s dress isn’t as iconic, the item is authenticated because it originally was sold by Christie’s in a Monroe estate sale nearly 20 years ago. — Ray Long, chicagotribune.com, "Lincoln foundation puts Marilyn Monroe dress on the block to save presidential memorabilia from same fate," 14 May 2018 The servers initially affected were those servicing the Europe and the Middle East region and the Asia-Pacific region; as those regions woke up and tried to authenticate, the servers overloaded and went down. — Peter Bright, Ars Technica, "Microsoft explains one Azure authentication outage as another one happens," 27 Nov. 2018 Now that work has been authenticated once more by the artist, its value should remain intact—and could likely grow following its provocative auction moment, dealers said. — Kelly Crow, WSJ, "Banksy Buyer Plans to Keep Shredded Painting," 11 Oct. 2018

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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Last Updated

7 Mar 2019

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Time Traveler for authenticate

The first known use of authenticate was in 1613

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More Definitions for authenticate

authenticate

verb

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

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