English

Definition of testify verb from the Oxford Advanced Learner's Dictionary

     

    testify

     verb
    verb
    BrE BrE//ˈtestɪfaɪ//
     
    ; NAmE NAmE//ˈtestɪfaɪ//
     
    Verb Forms present simple I / you / we / they testify
    BrE BrE//ˈtestɪfaɪ//
     
    ; NAmE NAmE//ˈtestɪfaɪ//
     
    he / she / it testifies
    BrE BrE//ˈtestɪfaɪz//
     
    ; NAmE NAmE//ˈtestɪfaɪz//
     
    past simple testified
    BrE BrE//ˈtestɪfaɪd//
     
    ; NAmE NAmE//ˈtestɪfaɪd//
     
    past participle testified
    BrE BrE//ˈtestɪfaɪd//
     
    ; NAmE NAmE//ˈtestɪfaɪd//
     
    -ing form testifying
    BrE BrE//ˈtestɪfaɪɪŋ//
     
    ; NAmE NAmE//ˈtestɪfaɪɪŋ//
     
     
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  1. 1[intransitive, transitive] to make a statement that something happened or that something is true, especially as a witness in court testify (against/for somebody) She refused to testify against her husband. There are several witnesses who will testify for the defence. testify about something He was summoned to testify before a grand jury about his role in the affair. testify to something/to doing something Evans testified to receiving $200 000 in bribes. testify (that)… He testified (that) he was at the theatre at the time of the murder. + speech ‘I was approached by a man I did not recognize,’ she testified.
  2. 2[transitive] testify (that)… (formal) to say that you believe something is true because you have evidence of it Too many young people are unable to write or spell well, as employers will testify.
  3. 3[intransitive] (especially North American English) to express your belief in God publicly
  4. Word Origin late Middle English: from Latin testificari, from testis ‘a witness’.Extra examples A senior officer testified to the existence of police hit squads. He took the stand to testify at the trial of his colleague. Several witnesses have come forward to testify against her. She refused to testify against her brother. She was unwilling to testify before Congress. The basis for the perjury conviction was he had testified falsely under oath. The president’s former aides were called to testify at his trial. a Mafia member who was prepared to testify for the authorities Phrasal Verbstestify to something
See the Oxford Advanced American Dictionary entry: testify

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