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)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for unattestedunidentified, unnamed, undisclosed, nameless, unsigned, incognito, pseudo, pseudonymous, secret, unspecified, X, innominate, unacknowledged, unattested, unavowed, unclaimed, uncredited, undesignated, whatchamacallit
(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; demonstratehis life of luxury attests his wealth
(tr) to provide evidence forthe marks in the ground attested the presence of a fossil
Word Origin for attest
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
Online Etymology Dictionary, © 2010 Douglas Harper