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 a word that was first attested in the 18th century
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 to I can attest to the truth of his statement.attest to a belief

Other Words from attest

attester \ ə-​ˈte-​stər How to pronounce attest (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 Again, not by Twitter, but by someone or thing who can attest to the fact, as shown in the diagram below. David G.w. Birch, Forbes, 26 Apr. 2022 One person who can attest to Collins' work ethic is Lucien Laviscount, who joined the show in season 2 as Emily's British love interest, Alfie. Alex Cramer,, 11 Apr. 2022 Her book greets us with an impressive roster of women, including poet Rupi Kaur and writer Leticia Sala, who attest to her dynamic spirit and imagination. Wired Photo Department, Wired, 21 Dec. 2021 Rebecca Covington Webber can also attest to the importance of remembering to lean into the support a community can provide because motherhood is not always a one-woman show. Jasmine Browley, Essence, 29 Apr. 2022 As anyone who has tried to swat a fly can attest, many of these buzzing pests have incredibly keen vision and fast reaction times. Monique Brouillette, Scientific American, 20 Apr. 2022 The award-winning book by film editor, director, writer and sound designer Walter Murch is the blueprint for film editing, as Oscar-winning director Francis Ford Coppola (who frequently works with the author) can attest. Thomas Hindle, The Hollywood Reporter, 18 Apr. 2022 As luthiers and piano-makers can attest, wood is a resonant material. Rebecca Mead, The New Yorker, 18 Apr. 2022 And as anyone who’s enjoyed his duck-truffle ravioli or local cartucho snapper with lobster-ratatouille jus at 1919 can attest, Cuevas has more than realized his goal. Diana Spechler, Robb Report, 9 Apr. 2022 See More

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.

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

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Time Traveler for attest

Time Traveler

The first known use of attest was circa 1500

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Statistics for attest

Last Updated

18 May 2022

Cite this Entry

“Attest.” Dictionary, Merriam-Webster, Accessed 24 May. 2022.

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More Definitions for attest


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 attest (audio) \ noun

History and Etymology for attest

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

More from Merriam-Webster on attest

Nglish: Translation of attest for Spanish Speakers

Britannica English: Translation of attest for Arabic Speakers


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