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Synonyms

attest

American  
[uh-test] / əˈtɛst /

verb (used with object)

  • attests,
    present (3rd person singular)
  • attested,
    past participle,  past
  • attesting
    present participle
  1. to bear witness to; certify; declare to be correct, true, or genuine; declare the truth of, in words or writing, especially to affirm in an official capacity.

    to attest the truth of a statement.

  2. to give proof or evidence of; manifest.

    His works attest his industry.

  3. Linguistics. to give evidence of the existence of (a word, phrase, usage, etc.), especially in writing: The dictionary attests this meaning as early as 1890.

    The plural form is attested in ancient texts.

    The dictionary attests this meaning as early as 1890.

  4. to put on oath.


verb (used without object)

  • attests,
    present (3rd person singular)
  • attested,
    past participle,  past
  • attesting
    present participle
  1. to testify or bear witness (often followed byto ).

    to attest to the reliability of an employee.

noun

  1. Archaic. witness; testimony; attestation.

attest British  
/ əˈtɛst /

verb

  1. (tr) to affirm the correctness or truth of

  2. to witness (an act, event, etc) or bear witness to (an act, event, etc) as by signature or oath

  3. (tr) to make evident; demonstrate

    his life of luxury attests his wealth

  4. (tr) to provide evidence for

    the marks in the ground attested the presence of a fossil

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of attest

First recorded in 1590–1600; < Middle French attester, from Latin attestārī “to bear witness to, affirm, confirm” equivalent to at- at- + testārī “to witness” ( see testis ( def. ))

Explanation

To attest is to prove or declare to be true. For example: the fact that you aced the SAT attests to the strength of your vocabulary. Attest and testify come from the same Latin word testari, which means "to declare." Although both words are kind of formal, you often testify in a courtroom, but attest doesn't require a court of law to function. You can attest to anything — that the funny looking shoes toned your thighs, that what someone says is true, or that the new acne medicine really works. To remember it, think of when you pass a test, you attest that you know the material.

Keep Reading on Vocabulary.com

Vocabulary lists containing attest

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

None of this is bad on its own, as millions of Sims fans can attest.

From Slate Sep. 6, 2026

Tens of thousands of comments on BookTok, a popular book community on TikTok, attest to the popularity of one of Russia's greatest novelists with the social media generation.

From Barron's Sep. 4, 2026

“Now I can attest to that as fact!”

From The Wall Street Journal Aug. 6, 2026

Seattleites, however, can attest that Burning Man’s ruin began long ago, pretty much since Microsofties and Amazonians invaded it in the early aughts.

From Salon Jul. 24, 2026

They could not have been more mistaken: As anybody who knew Albus would attest, he never revealed the remotest anti-Muggle tendency.

From "Harry Potter and the Deathly Hallows" by J.K. Rowling

Shew said he’s only supposed to be given registrations to process if the would-be voter attests they are a U.S. citizen, as federal law requires.

From Salon May 14, 2026

"Belen Garijo's brilliant international career attests to her strategic vision and her ability to drive profound and value-creating transformations," board chairman Frederic Oudea said in a statement.

From Barron's Feb. 12, 2026

Ms. Ackmann also attests to Ms. Parton’s traditional values.

From The Wall Street Journal Jan. 2, 2026

As the ending of the musical attests, there may be a way to do both, to be politically engaged and still enjoy the beauty of the world around you.

From Los Angeles Times Dec. 23, 2025

Gorgias’s brother Herodicus is a doctor, and the former attests that when trying to persuade a patient to submit to a course of treatment, his oratory is far more effective than his brother’s medical expertise.

From "Words Like Loaded Pistols" by Sam Leith

De Kooning’s refusal to settle for a single approach is attested to by a series of cartoon-like standing figures, repeated by means of transfer techniques, that recalls those earlier efforts at illustration.

From The Wall Street Journal Aug. 12, 2026

Greenspan, in a 1985 letter to regulators and in testimony to Congress, attested to Lincoln’s financial strength and the prudence of its lending program.

From Los Angeles Times Jun. 22, 2026

His long, productive career encompassed more than six decades, in each of which his live performances and recordings continually attested to his preeminence as one of jazz history’s most vital, innovative and influential artists.

From Los Angeles Times May 26, 2026

In letters to the court, family and friends, including Perla Hudson, the ex-wife of musician Slash, attested to Sangha’s character.

From The Wall Street Journal Apr. 8, 2026

The willingness of the two universities to share Robert Oppenheimer attested to the scarcity of qualified theoretical physicists in American academia, especially theoreticians of Oppenheimer’s distinction.

From "Big Science" by Michael Hiltzik

A medical letter attesting to your mother’s health might help.

From MarketWatch Aug. 27, 2026

Even attesting to the Irish that they don’t do any of the banned trade would be a U.S. violation.

From The Wall Street Journal Jun. 4, 2026

"Then, the video attesting to the truth would be shown," she says.

From BBC Feb. 14, 2026

Just seven weeks later, he got another mortgage for a seven-bedroom, marble-floored neighboring property, attesting that it too would be his principal residence.

From Salon Dec. 8, 2025

Records attesting to his death were pullulating like insect eggs and verifying each other beyond all contendon.

From "Catch-22" by Joseph Heller

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