Simple Definition of testify
: to talk and answer questions about something especially in a court of law while formally promising that what you are saying is true
: to talk about or say (something) in an honest and confident way
: to show that something is true or real : to give proof of something
Full Definition of testify
1a : to make a statement based on personal knowledge or belief : bear witnessb : to serve as evidence or proof
2 : to express a personal conviction
3 : to make a solemn declaration under oath for the purpose of establishing a fact (as in a court)
2 archaic a : to make known (a personal conviction)b : to give evidence of : show
3 : to declare under oath before a tribunal or officially constituted public body
Examples of testify
She refused to testify about who had given her the information.
She testified before Congress today.
He agreed to testify against his drug dealer.
He testified that he'd seen two people leave the building on the night of the murder.
These statistics testify that the program is working.
Several people testified during the revival meeting.
Origin of testify
Middle English testifien, from Anglo-French testifier, from Latin testificari, from testis witness
First Known Use: 14th century
Rhymes with testify
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