Definition of testify in English:



  • 1 Give evidence as a witness in a law court.

    ‘he testified against his own commander’
    [with clause] ‘he testified that he had supplied Barry with crack’
    • ‘The case is expected to go on for six to seven weeks and it is thought there will be more than 70 witnesses called upon to testify.’
    • ‘The prosecutors called no witnesses to testify and presented little evidence.’
    • ‘Professional medical organizations have strongly discouraged members from testifying on behalf of plaintiffs.’
    • ‘The plea deal was announced just two days after a key witness began testifying against him.’
    • ‘The plaintiff's attorneys wrapped up their case with their last two witnesses testifying.’
    • ‘Without witnesses testifying to the event, there would be reasonable doubt for an acquittal.’
    • ‘His whole case was based upon what he testified in the witness box and three alibi witnesses.’
    • ‘The appellant did not testify and no evidence was called on behalf of the defence.’
    • ‘He's also a forensic psychiatrist - one of those guys who testifies as an expert witness in court trials.’
    • ‘All three witnesses have testified that they have not discussed their evidence with each other.’
    • ‘Indeed, the only witnesses who testified at the trial were the two plaintiffs themselves.’
    • ‘The Defendant testified that she does not have any desire to use the time-share.’
    • ‘The charge was initially dropped after a witness who was to testify against her failed to turn up at the hearing.’
    • ‘The lawyer who is a necessary witness should testify and entrust the conduct of the case to another lawyer.’
    • ‘The first witness to testify yesterday spoke from behind a curtain and had his voice disguised.’
    • ‘If you know your business like a book, testifying as an expert witness can be a lucrative sideline.’
    • ‘In practice witnesses testifying in court are very often asked simply whether they confirm the testimony they gave to the investigating judge.’
    • ‘Complainants may waver about testifying for any number of reasons.’
    • ‘A defendant who testifies in his own defense opens the door to the admission of prior convictions, not prior charges.’
    • ‘The plaintiffs have testified that some of those letters were dictated by the defendant.’
    attest, swear, state on oath, state, declare, assert, affirm, avow, aver, certify
    give evidence, bear witness, be a witness, give one's testimony, attest
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    1. 1.1Serve as evidence or proof of something's existing or being the case.
      ‘the bleak lines testify to inner torment’
      • ‘There are some trends that testify to the importance of retirement planning.’
      • ‘The dhol is a north Indian drum made from goatskin, and anybody who has stood next to one will testify to how loud it sounds when played.’
      • ‘Many Roman authors testify to the red mullet fever which gripped their contemporaries in the first centuries ad.’
      • ‘They all testify to your outstanding clinical skills and unparalleled commitment to the welfare of children.’
      • ‘Those who have availed of twinning collaboration from both towns will testify to its success.’
      • ‘I can personally testify to the importance of having role models and the companionship of other women colleagues.’
      • ‘Anyone who has eaten in a Turkish city can testify to the richness of real Turkish cuisine.’
      • ‘Ask any parent, and they would testify to the craze children have for these little books.’
      • ‘Today the pictures on the wall testify to the strength of the hurling legend.’
      • ‘She was a very hard worker, a great home maker, and was above all a pleasure to know as all who knew her will testify to.’
      • ‘This journalist has the Blackberry in action and will readily testify to its usefulness.’
      • ‘It is not only Manchester United who can testify to FC Porto's current European pedigree.’
      • ‘At every ground there were sell-outs and lock-outs to testify to the greatness of Gallaher's team.’
      • ‘The artifacts from Ozette testify to the central role of whaling in the Tribe before contact with westerners.’
      • ‘Those who knew Chapman all testify to his kindness, persistence, simplicity and integrity.’
      • ‘Dedications by sculptors and potters from Archaic Greece testify to the wealth of at least some of these artisans.’
      • ‘Poems such as the Welsh Gododdin testify to the celebration of the warrior ideal and its powerful attraction for poets.’
      • ‘He adored his students and, today, many testify to his personal help and kindness.’
      • ‘The Bulgarian Orthodox Church could also testify to a person's Bulgarian descent.’
      • ‘All of these companies would testify to the skill and commitment of the local labour force.’
      be evidence of, be proof of, attest to, confirm, evidence, prove, corroborate, substantiate, bear out
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Late Middle English: from Latin testificari, from testis a witness.