[ uh-test ]
See synonyms for: attestattestedattestableattestant on

verb (used with object)
  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.

  1. 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.

  2. to put on oath.

verb (used without object)
  1. to testify or bear witness (often followed by to): to attest to the reliability of an employee.

  1. Archaic. witness; testimony; attestation.

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)

Other words from attest

  • 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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use attest in a sentence

  • That their bearing, one and all, was truly noble, friends and foes took pride in attesting.

    The Felon's Track | Michael Doheny
  • I must tell you that the tally attesting attendance is worth five shillings, the old crown-piece.

    The Immortal | Alphonse Daudet
  • A testimonial from my father attesting my capacity for the curriculum procured me matriculation without difficulty.

  • A part of the obligations assumed by the members of this Legion shows why it is thus pursued, while also attesting its innocence.

British Dictionary definitions for attest


/ (əˈtɛst) /

  1. (tr) to affirm the correctness or truth of

  2. (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

  1. (tr) to make evident; demonstrate: his life of luxury attests his wealth

  2. (tr) to provide evidence for: the marks in the ground attested the presence of a fossil

Origin of attest

C16: from Latin attestārī to prove, from testārī to bear witness, from testis a witness

Derived forms of attest

  • 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