Authenticate — Meaning, Definition & Synonyms

verb /ə-ˈthen-ti-ˌkāt/ au·then·ti·cate

Meaning & Definition of Authenticate

Authenticate (verb)

  1. to prove or serve to prove to be real, true, or genuine

Authenticate (verb) — Senses, Synonyms & Antonyms

  1. to declare (something) to be true or genuine

    "a jeweler authenticated the diamond as real"

    similar: attest, avouch, certify, testify (to), vouch (for), witness
    related: guarantee, warrant, affirm, assert, aver, avow, profess, vow

  2. to give evidence or testimony to the truth or factualness of

    "we require more than simply your word to authenticate this story"

    similar: argue, attest, bear out, certify, confirm, corroborate, substantiate, support, validate, verify, vindicate
    related: avouch, back (up), testify (to), vouch (for), witness, guarantee, warrant, affirm, assert, aver, avow, declare, profess, demonstrate, document, establish, prove, reinforce
    opposite: disprove, rebut, refute
    near: contradict, gainsay, deny, disavow, disclaim, challenge, contest, dispute, question

Synonyms, Thesaurus & Another Word for Authenticate

The most common words with a similar meaning to Authenticate:

attest, avouch, certify, testify (to), vouch (for), witness, argue, bear out, confirm, corroborate, substantiate, support, validate, verify, vindicate

Antonyms & Opposite Words for Authenticate

Words with the opposite meaning of Authenticate:

disprove, rebut, refute

Related Words for Authenticate

guarantee, warrant, affirm, assert, aver, avow, profess, vow, back (up), declare, demonstrate, document, establish, prove, reinforce

Near Antonyms of Authenticate

contradict, gainsay, deny, disavow, disclaim, challenge, contest, dispute, question

Word Forms of Authenticate

Inflections: authenticated, authenticating

Derived words: authenticator (noun)

Origin & Etymology of Authenticate

borrowed from Medieval Latin authenticātus, past participle of authenticāre "to stamp as genuine or authoritative," derivative of Latin authenticus "original (of documents)" authentic

First known use: 1613

Vocabulary Lists & Topics for Authenticate

Frequently Asked Questions about Authenticate

What does "Authenticate" mean?

"Authenticate" means to prove or serve to prove to be real, true, or genuine. As a verb, it is defined as: to prove or serve to prove to be real, true, or genuine. It has 2 distinct senses.

What is another word for "Authenticate"?

Other words for "Authenticate" include attest, avouch, certify, testify (to), vouch (for), witness, argue and bear out. The best synonym depends on which meaning of "Authenticate" you intend.

What are different ways to say "Authenticate"?

There are 30 words and phrases with a similar meaning to "Authenticate". Common alternatives include attest, avouch, certify, testify (to), vouch (for), witness, argue, bear out, confirm and corroborate.

What is the opposite of "Authenticate"?

Antonyms of "Authenticate" include disprove, rebut and refute. Near antonyms include contradict, gainsay, deny and disavow.

How do you use "Authenticate" in a sentence?

Examples of "Authenticate" in a sentence: "a jeweler authenticated the diamond as real"; "we require more than simply your word to authenticate this story".

Is "Authenticate" a noun, verb, or adjective?

"Authenticate" is a verb.

Is "Authenticate" useful for IELTS, TOEFL, and other English exams?

As a C2-level word, "Authenticate" is typical of Cambridge C2 Proficiency (CPE), IELTS band 8.5–9.0, TOEFL iBT 114–120, PTE Academic 85–90. Advanced words like this are also useful for the GRE, SAT, GMAT, and LSAT.

How do you pronounce "Authenticate"?

"Authenticate" is pronounced /ə-ˈthen-ti-ˌkāt/ and divided into syllables as au·then·ti·cate.