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[uh-test] /əˈtɛst/
verb (used with object)
to bear witness to; certify; declare to be correct, true, or genuine; declare the truth of, in words or writing, especially affirm in an official capacity:
to attest the truth of a statement.
to give proof or evidence of; manifest:
His works attest his industry.
to put on oath.
verb (used without object)
to testify or bear witness (often followed by to):
to attest to the reliability of an employee.
Archaic. witness; testimony; attestation.
Origin of attest
1590-1600; (< Middle French attester) < Latin attestārī to bear witness to, equivalent to at- at- + testārī (test(is) a witness + -ā- thematic vowel + -rī infinitive suffix)
Related forms
attestable, adjective
attestant, noun
attester, attestor, attestator
[uh-tes-tey-ter, at-e-stey-] /əˈtɛs teɪ tər, ˈæt ɛˌsteɪ-/ (Show IPA),
attestive, adjective
reattest, verb (used with object)
unattested, adjective
well-attested, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for attest
Contemporary Examples
Historical Examples
  • Nor is there any year of his life when his work does not attest a clear eye and a firm hand.

    Holbein Beatrice Fortescue
  • And thus it long remained, as if to attest the true level of Holbein's genius.

    Holbein Beatrice Fortescue
  • But come, let us attest the gods; for they will be the best witnesses and observers of agreements.

  • The sympathy was largely genuine, as Hartley could attest, but it bored the invalid.

    Wayside Courtships Hamlin Garland
  • All attest that in Dreamland there is no such thing as repose.

    The World I Live In

    Helen Keller
British Dictionary definitions for attest


(transitive) 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
(transitive) to make evident; demonstrate: his life of luxury attests his wealth
(transitive) to provide evidence for: the marks in the ground attested the presence of a fossil
Derived Forms
attestable, adjective
attestant, attester, especially (law) attestor, attestator, noun
attestation (ˌætɛˈsteɪʃən) noun
Word Origin
C16: from Latin attestārī to prove, from testārī to bear witness, from testis a witness
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
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Word Origin and History for attest

1590s, from Middle French attester (Old French atester, 13c.) "affirm, attest," from Latin attestari "confirm," literally "bear witness to," from ad- "to" (see ad-) + testari "bear witness," from testis "witness" (see testament). Related: Attested; attesting.

Online Etymology Dictionary, © 2010 Douglas Harper
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