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English definition of “testify”

testify

verb [I or T]
 
 
/ˈtestɪfaɪ/
LAW to make a formal statement about something, especially in a court of law: testify that He testified that the store owner had lied when he applied for the state license. 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.
(Definition of testify from the Cambridge Business English Dictionary © Cambridge University Press)
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