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[ver-uh-fahy] /ˈvɛr əˌfaɪ/
verb (used with object), verified, verifying.
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 forms
verifiability, verifiableness, noun
verifiable, adjective
verifier, noun
nonverifiable, adjective
preverify, verb (used with object), preverified, preverifying.
reverify, verb (used with object), reverified, reverifying.
unverifiability, noun
unverifiable, adjective
2. authenticate, validate. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for verifiable
Contemporary Examples
Historical Examples
  • That is, it has enabled him to discover a verifiable and verified formula.

    Social Rights And Duties Leslie Stephen
  • 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?

    Logic 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
  • The 'colligation' of facts demands hypotheses, and these may not, at the moment of their construction, be verifiable.

    Magic and Religion Andrew Lang
  • It is rare, in anthropological speculations, to light on a topic in which verifiable dates occur.

    Magic and Religion Andrew Lang
  • It reaches its goal whenever it can replace its early guessing by verifiable hypotheses and predictable results.

British Dictionary definitions for verifiable


verb (transitive) -fies, -fying, -fied
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 Forms
verifiable, adjective
verifiableness, noun
verifiably, adverb
verifier, noun
Word Origin
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
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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
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