verb (used with object), ver·i·fied, ver·i·fy·ing.

to prove the truth of, as by evidence or testimony; confirm; substantiate: Events verified his prediction.
to ascertain the truth or correctness of, as by examination, research, or comparison: to verify a spelling.
to act as ultimate proof or evidence of; serve to confirm.
  1. to prove or confirm (an allegation).
  2. to state to be true, especially in legal use, formally or upon oath.

Origin of verify

1275–1325; Middle English verifien < Middle French verifier < Medieval Latin vērificāre, equivalent to vēri-, combining form of vērus true + -ficāre -fy
Related formsver·i·fi·a·bil·i·ty, ver·i·fi·a·ble·ness, nounver·i·fi·a·ble, adjectivever·i·fi·er, nounnon·ver·i·fi·a·ble, adjectivepre·ver·i·fy, verb (used with object), pre·ver·i·fied, pre·ver·i·fy··ver·i·fy, verb (used with object), re·ver·i·fied, re·ver·i·fy·ing.un·ver·i·fi·a·bil·i·ty, nounun·ver·i·fi·able, adjective

Synonyms for verify Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for verifiable

valid, correct, testable

Examples from the Web for verifiable

Contemporary Examples of verifiable

  • The mutual, verifiable elimination of nuclear weapons has long been popular among the publics in many nations.

    The Daily Beast logo
    Will Obama End the Nuclear Era?

    Joseph Cirincione

    April 12, 2010

  • We strongly support the early commencement of negotiations on a verifiable Fissile Material Cut-Off Treaty.

    The Daily Beast logo
    How to End the Nuclear Threat

    The Daily Beast

    June 10, 2009

Historical Examples of verifiable

  • That is, it has enabled him to discover a verifiable and verified formula.

  • Unless these are verifiable I leave them to the care of others, and pass on.

    Richard Wagner

    John F. Runciman

  • Given a verifiable hypothesis, however, what constitutes proof or disproof?


    Carveth Read

  • Physical science is at home only in the experimental, the verifiable.

    The Breath of Life

    John Burroughs

  • And I can truthfully say that, from a religious point of view, their verifiable report is always interesting.

    What and Where is God?

    Richard La Rue Swain

British Dictionary definitions for verifiable


verb -fies, -fying or -fied (tr)

to prove to be true; confirm; substantiate
to check or determine the correctness or truth of by investigation, reference, etc
law to add a verification to (a pleading); substantiate or confirm (an oath)
Derived Formsverifiable, adjectiveverifiableness, nounverifiably, adverbverifier, noun

Word Origin for verify

C14: from Old French verifier, from Medieval Latin vērificāre, from Latin vērus true + facere to make
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

Word Origin and History for verifiable



early 14c., from Old French verifier, from Medieval Latin verificare "make true," from Latin verus "true" (see very) + root of facere "to make" (see factitious).

Online Etymology Dictionary, © 2010 Douglas Harper