testify Meaning in the Cambridge English Dictionary
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Meaning of “testify” in the English Dictionary

"testify" in British English

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testifyverb [I or T]

uk   us   /ˈtes.tɪ.faɪ/
C2 to ​speakseriously about something, ​especially in a ​lawcourt, or to give or ​provideproof: [+ that] He testified that he had ​seen the man ​leaving the ​building around the ​time of the ​murder.
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(Definition of testify from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"testify" in American English

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testifyverb

 us   /ˈtes·təˌfɑɪ/
to ​speak seriously about something, esp. to ​tell what you ​know about a ​case in a ​court of ​law after you have ​officiallypromised to ​tell the ​truth: [I] Elizabeth testified before a ​grandjury. [+ that clause] One ​witness testified that she ​saw the ​thiefrunning away.
(Definition of testify from the Cambridge Academic Content Dictionary © Cambridge University Press)

"testify" in Business English

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testifyverb [I or T]

uk   us   /ˈtestɪfaɪ/
LAW to make a ​formalstatement about something, especially in a ​court of ​law: testify that He testified that the ​storeowner had lied when he ​applied for the ​statelicense. The senator testified to the ​House Committee on Financial Services.
to say that something is ​true: Managing ​people is not ​easy, as many new ​managers can testify.
Phrasal verbs
(Definition of testify from the Cambridge Business English Dictionary © Cambridge University Press)
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