Definition of testify in English:


verbtestifying, testified, testifies

[no object]
  • 1Give evidence as a witness in a law court.

    ‘he testified against his own commander’
    with clause ‘two guards testified that he was one of the assailants’
    • ‘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.’
    • ‘All three witnesses have testified that they have not discussed their evidence with each other.’
    • ‘Professional medical organizations have strongly discouraged members from testifying on behalf of plaintiffs.’
    • ‘A defendant who testifies in his own defense opens the door to the admission of prior convictions, not prior charges.’
    • ‘The prosecutors called no witnesses to testify and presented little evidence.’
    • ‘He's also a forensic psychiatrist - one of those guys who testifies as an expert witness in court trials.’
    • ‘The lawyer who is a necessary witness should testify and entrust the conduct of the case to another lawyer.’
    • ‘The charge was initially dropped after a witness who was to testify against her failed to turn up at the hearing.’
    • ‘The plaintiff's attorneys wrapped up their case with their last two witnesses testifying.’
    • ‘His whole case was based upon what he testified in the witness box and three alibi witnesses.’
    • ‘The first witness to testify yesterday spoke from behind a curtain and had his voice disguised.’
    • ‘Complainants may waver about testifying for any number of reasons.’
    • ‘The plea deal was announced just two days after a key witness began testifying against him.’
    • ‘In practice witnesses testifying in court are very often asked simply whether they confirm the testimony they gave to the investigating judge.’
    • ‘If you know your business like a book, testifying as an expert witness can be a lucrative sideline.’
    • ‘The plaintiffs have testified that some of those letters were dictated by the defendant.’
    • ‘Without witnesses testifying to the event, there would be reasonable doubt for an acquittal.’
    • ‘The appellant did not testify and no evidence was called on behalf of the defence.’
    • ‘The Defendant testified that she does not have any desire to use the time-share.’
    • ‘Indeed, the only witnesses who testified at the trial were the two plaintiffs themselves.’
    give evidence, bear witness, be a witness, give one's testimony, attest
    attest, swear, state on oath, state, declare, assert, affirm, avow, aver, certify
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    1. 1.1 Serve as evidence or proof that something exists or is the case.
      ‘the bleak lines testify to inner torment’
      • ‘They all testify to your outstanding clinical skills and unparalleled commitment to the welfare of children.’
      • ‘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.’
      • ‘This journalist has the Blackberry in action and will readily testify to its usefulness.’
      • ‘All of these companies would testify to the skill and commitment of the local labour force.’
      • ‘Anyone who has eaten in a Turkish city can testify to the richness of real Turkish cuisine.’
      • ‘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.’
      • ‘It is not only Manchester United who can testify to FC Porto's current European pedigree.’
      • ‘I can personally testify to the importance of having role models and the companionship of other women colleagues.’
      • ‘Those who knew Chapman all testify to his kindness, persistence, simplicity and integrity.’
      • ‘There are some trends that testify to the importance of retirement planning.’
      • ‘Dedications by sculptors and potters from Archaic Greece testify to the wealth of at least some of these artisans.’
      • ‘Those who have availed of twinning collaboration from both towns will testify to its success.’
      • ‘Many Roman authors testify to the red mullet fever which gripped their contemporaries in the first centuries ad.’
      • ‘Poems such as the Welsh Gododdin testify to the celebration of the warrior ideal and its powerful attraction for poets.’
      • ‘Today the pictures on the wall testify to the strength of the hurling legend.’
      • ‘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.’
      • ‘Ask any parent, and they would testify to the craze children have for these little books.’
      • ‘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.’
      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’.