testify
/ˈtɛstəˌfaɪ/
verb
testifies;
testified;
testifying
testifies;
testified;
testifying
Britannica Dictionary definition of TESTIFY
1
a
:
to talk and answer questions about something especially in a court of law while formally promising that what you are saying is true
[no object]
-
She refused to testify about who had given her the information.
-
Three witnesses were called/summoned to testify at (the) trial.
-
She testified before Congress today.
-
He agreed to testify against his drug dealer.
-
They will testify for the defense/prosecution. [=they will testify because the defense/prosecution has asked them to]
[+ object]
b
:
to talk about or say (something) in an honest and confident way
[+ object]
[no object]
—
+ to
2
:
to show that something is true or real
:
to give proof of something
[no object]
—
+ to
-
These statistics testify to the fact that the program is working. [=show that the program is working]
-
The fact that doctors were able to catch the disease before it had spread testifies to the importance of medical screenings.
[+ object]
3
[no object]
US
:
to talk to a group of people about your belief in God especially as part of a church service