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.
to give proof or evidence of; manifest: His works attest his industry.
Linguistics. to give evidence of the existence of (a word, phrase, usage, etc.), especially in writing:The plural form is attested in ancient texts.The dictionary attests this meaning as early as 1890.
to put on oath.
to testify or bear witness (often followed by to): to attest to the reliability of an employee.
Archaic. witness; testimony; attestation.
- at·test·a·ble, adjective
- at·test·ant, noun
- at·test·er, at·tes·tor, at·tes·ta·tor [uh-tes-tey-ter, at-e-stey-], /əˈtɛs teɪ tər, ˈæt ɛˌsteɪ-/, noun
- at·tes·tive, adjective
- re·at·test, verb (used with object)
- un·at·test·ed, adjective
- well-at·test·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use attest in a sentence
All would attest to the manifest goodness that inspired the perfect nickname for the boy who would become a perfect cop.
Survivors of Ebola, as thousands in West Africa can attest to, can—and often do—make a full recovery.
Her father can attest to that, having seen her in action in a Brooklyn courtroom.For Next AG, Obama Picks a Quiet Fighter With a Heavy Punch | Michael Daly | November 8, 2014 | THE DAILY BEAST
The Yelp reviews attest to the diverse crowd that frequents Orchard Corset Center.
Anyone familiar with the events of four years ago can attest to that.The Decision 2: LeBron James Trolls the World… Again | Marlow Stern | July 11, 2014 | THE DAILY BEAST
Just corporeal enough to attest humanity, yet sufficiently transparent to let the celestial origin shine through.Pearls of Thought | Maturin M. Ballou
Tausig, in my opinion, did possess exceptional genius in composition, though he left but few works behind him to attest it.Music-Study in Germany | Amy Fay
The Gentleman's Magazine contains a long list of the bridges and churches which attest his reputation and skill.The Every Day Book of History and Chronology | Joel Munsell
That he was an autocratic chairman, his brother directors, were they now living, would I am sure attest.Fifty Years of Railway Life in England, Scotland and Ireland | Joseph Tatlow
If the letter was preserved the seal was kept attached to it in order to attest its authenticity.The Private Life of the Romans | Harold Whetstone Johnston
British Dictionary definitions for attest
(tr) to affirm the correctness or truth of
(when intr, usually foll by to) to witness (an act, event, etc) or bear witness to (an act, event, etc) as by signature or oath
(tr) to make evident; demonstrate: his life of luxury attests his wealth
(tr) to provide evidence for: the marks in the ground attested the presence of a fossil
- attestable, adjective
- attestant, attester, esp law attestor or attestator, noun
- attestation (ˌætɛˈsteɪʃən), noun
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