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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:

I used to be a bit of a slob, my friends and family will attest.

From The Wall Street Journal Aug. 8, 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

Hartig told lawmakers that while the White House report is under review, "we unwaveringly attest that it does not fairly or accurately characterize the full body of work at the museum."

From Barron's Jul. 24, 2026

Supporters highlight that current law already demands voters attest to their citizenship under penalty of perjury, and they contend that constitutional amendments like Prop.

From Los Angeles Times Jul. 17, 2026

The tribes of the North and the South have long had contact, at least as far back as the ninth century, as some of the magnificent beads discovered at the historic Igbo-Ukwu site attest.

From "Half of a Yellow Sun" by Chimamanda Ngozi Adichie

Of course, within those strictures, conservatives may refine and advance as well as conserve, as Mr. Alexander’s score card attests.

From The Wall Street Journal Jul. 15, 2026

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

Jean has two personalities, he attests: “the peaceful one here, and the bonkers one onstage.”

From Los Angeles Times Feb. 25, 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

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

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

She did all this, he continued, “while enjoying a lavish lifestyle in Los Angeles, as attested to by her frequent posting on her recently deleted Instagram account.”

From Los Angeles Times Apr. 6, 2026

In court, lawyers for the department attested that Immigration and Customs Enforcement and Customs and Border Protection rigorously adhered to this standard.

From Slate Feb. 18, 2026

The names of neither father nor son are attested much elsewhere.

From "Circumference" by Nicholas Nicastro

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

From MarketWatch Aug. 27, 2026

“Where we don’t have research, clinical trials, what we’ve got a ton of, is, shall we say, testimonials, patient affidavits, attesting to the wonders of the drug,” said Scott Brunner, the alliance’s chief executive officer.

From Salon Apr. 4, 2026

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

From BBC Feb. 14, 2026

He showed me a text message from a senior producer attesting to that.

From Los Angeles Times Jan. 9, 2026

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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