tes·ti·fy
1. To make a declaration of truth or fact under oath; submit testimony: witnesses testifying before a grand jury.
1. To make a declaration of truth or fact under oath; submit testimony: witnesses testifying before a grand jury.
2. To express or declare a strong belief, especially to make a declaration of faith.
3. To make a statement based on personal knowledge in support of an asserted fact; bear witness: the exhilaration of weightlessness, to which many astronauts have testified.
4. To serve as evidence: wreckage that testifies to the ferocity of the storm.
v.tr.
1. To declare publicly; make known: testifying their faith.
2. To state or affirm under oath: testified in court that he saw the defendant.
3. To bear witness to; provide evidence for.