testify

1 ENTRIES FOUND:
testify /ˈtɛstəˌfaɪ/ verb
testifies; testified; testifying
testify
/ˈtɛstəˌfaɪ/
verb
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]
[+ 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
[+ object]
3 
[no object] US : to talk to a group of people about your belief in God especially as part of a church service