at·​test | \ ə-ˈtest How to pronounce attest (audio) \
attested; attesting; attests

Definition of attest

transitive verb

1a : to affirm to be true or genuine specifically : to authenticate by signing as a witness
b : to authenticate officially
2 : to establish or verify the usage of The first use of the word "Internet" is attested in 1985.
3 : to be proof of : manifest Her record attests her integrity.
4 : to put on oath

intransitive verb

: to show, prove, or state that something is true or real usually used with toI can attest to the truth of his statement.attest to a belief

Keep scrolling for more

Other Words from attest

attester \ ə-​ˈte-​stər How to pronounce attester (audio) \ noun

Choose the Right Synonym for attest

certify, attest, witness, vouch mean to testify to the truth or genuineness of something. certify usually applies to a written statement, especially one carrying a signature or seal. certified that the candidate had met all requirements attest applies to oral or written testimony usually from experts or witnesses. attested to the authenticity of the document witness applies to the subscribing of one's own name to a document as evidence of its genuineness. witnessed the signing of the will vouch applies to one who testifies as a competent authority or a reliable person. willing to vouch for her integrity

Examples of attest in a Sentence

I can attest that what he has said is true. The certificate attests the authenticity of the painting.
Recent Examples on the Web Hospitals and ASCs will be required to attest to these PPE requirements. The Oregonian/oregonlive, oregonlive, "Restarting elective procedures at hospitals, surgical centers in Oregon on May 1: Read the state guidelines," 29 Apr. 2020 People who have the means to make their payment may be willing to attest to indirect hardship, but surely the number would become a mere fraction of present levels if actual demonstration of hardship was required. David L. Bahnsen, National Review, "The Mortgage Forbearance in the CARES Act Is Seriously Flawed," 23 Apr. 2020 There’s no physical trace of it now, but Nightingale’s letters and the accounts of colleagues who served beside her have kept the place alive in literature—and attest to her physical bravery. Tina Hillier, Smithsonian Magazine, "The Defiance of Florence Nightingale," 20 Feb. 2020 Waiting is often the hardest part, and Wanogho can attest to that after a prolonged wait during last weekend’s NFL Draft. Tom Green |, al, "After Prince Tega Wanogho’s long wait, Gus Malzahn believes he may be ‘steal’ of NFL Draft," 29 Apr. 2020 Home fitness, of course, faces many hurdles, as anyone with a bike or treadmill that most often gets used as a place to dry clothes can attest. Los Angeles Times, "If it weren’t for virtual reality games, I wouldn’t be getting exercise right now," 26 Apr. 2020 How the virus attacks the heart and blood vessels is a mystery, but dozens of preprints and papers attest that such damage is common. Meredith Wadman, Science | AAAS, "How does coronavirus kill? Clinicians trace a ferocious rampage through the body, from brain to toes," 17 Apr. 2020 And as London’s menswear faithful can attest, Paris is extremely lucky to have him. Luke Leitch, Vogue, "Paris, Future: Craig Green on Making the Leap From London," 18 Jan. 2020 And if one longtime server can attest they weren’t notified that management was taking a tip credit, chances are his coworkers weren’t notified either, and the restaurant could be liable for hundreds of thousands of dollars, Bober said. Ron Hurtibise,, "Many restaurants are cheating the employees who serve us," 16 Aug. 2019

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

See More

First Known Use of attest

circa 1500, in the meaning defined at transitive sense 1a

History and Etymology for attest

Middle French attester, from Latin attestari, from ad- + testis witness — more at testament

Keep scrolling for more

Learn More about attest

Time Traveler for attest

Time Traveler

The first known use of attest was circa 1500

See more words from the same year

Statistics for attest

Last Updated

19 May 2020

Cite this Entry

“Attest.” Dictionary, Merriam-Webster, Accessed 1 Jun. 2020.

Keep scrolling for more

More Definitions for attest


How to pronounce attest (audio)

English Language Learners Definition of attest

formal : to show, prove, or state that something is true or real


at·​test | \ ə-ˈtest How to pronounce attest (audio) \
attested; attesting

Kids Definition of attest

: to show or give proof of : say to be true I can attest to his innocence.


at·​test | \ ə-ˈtest How to pronounce attest (audio) \

Legal Definition of attest

transitive verb

: to bear witness to : affirm to be true or genuine specifically : to authenticate (as a will) by signing as a witness

intransitive verb

: to bear witness : testify often used with to

Other Words from attest

attestation \ ˌa-​ˌtes-​ˈtā-​shən How to pronounce attestation (audio) \ noun

History and Etymology for attest

Latin attestari, from ad to + testari to call to witness, from testis witness

Keep scrolling for more

More from Merriam-Webster on attest

Thesaurus: All synonyms and antonyms for attest

Spanish Central: Translation of attest

Nglish: Translation of attest for Spanish Speakers

Britannica English: Translation of attest for Arabic Speakers

Comments on attest

What made you want to look up attest? Please tell us where you read or heard it (including the quote, if possible).


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

May 2020 Words of the Day Quiz

  • a blooming wisteria tree
  • Which is a synonym of exiguous?
Spell It

Can you spell these 10 commonly misspelled words?

Add Diction

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!