Definition of verify in US English:


verbverifies, verified, verifying

[with object]
  • 1Make sure or demonstrate that (something) is true, accurate, or justified.

    ‘his conclusions have been verified by later experiments’
    with clause ‘“Can you verify that the guns are licensed?”’
    • ‘The model results were subsequently verified experimentally, and others are readily testable.’
    • ‘Another scientist pointed out that this study verified what many other studies had found.’
    • ‘No scientific and independent sources have so far verified the claims of either side.’
    • ‘All runners are then scanned before each race or sale to verify their identity.’
    • ‘What's great about technology today is that you can verify who they are pretty fast.’
    • ‘Absence of the wild-type gene was also verified by PCR at this point.’
    • ‘The integrity of the new constructs was verified by DNA sequencing.’
    • ‘They are the ones who made a poor decision based on insufficiently verified claims.’
    • ‘Also verify what level of software support is purchased.’
    • ‘Why should one take on faith any tenets that haven't been verified by personal observation or experimentation?’
    • ‘And he or she can easily verify what he is claiming is true or false.’
    • ‘Cameras and recorders are in place to verify who actually catches the million dollar ball.’
    • ‘He did not participate in its preparation and did not verify its accuracy.’
    • ‘However, there was no way to independently verify the identity of the men killed and arrested on Saturday night.’
    • ‘Consider the statement that the only valid knowledge is that which can be empirically verified.’
    • ‘Distance gap and projected time gap data will be verified here using a similar rationale.’
    • ‘They don't have to verify the authenticity of documents provided by job applicants.’
    • ‘We have experimentally verified the utility of the microscope dynamic light scattering imaging technique.’
    • ‘Although widely accepted in public, the discoidal structure has not been verified experimentally.’
    • ‘The results were also verified by Northern blot analysis.’
    1. 1.1Law Swear to or support (a statement) by affidavit.
      • ‘This week, the US Supreme Court upheld an appeal court ruling that verified the original District Court verdict.’
      • ‘Ms Amin verified her witness statements and answered some additional questions in chief.’
      • ‘No one went through the statements from Ms Cosgrove in an attempt to verify her allegations.’
      • ‘He has provided two witness statements and has verified the truth of the Particulars of Claim.’
      • ‘There was filed as Exhibit 10 the application verified by statutory declaration.’


Middle English (as a legal term): from Old French verifier, from medieval Latin verificare, from verus ‘true’.