Testifier

tes·ti·fy  (tst-f)

v. test·i·fied, test·i·fy·ing, test·i·fies

v.intr.

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. See Synonyms at indicate.

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[Middle English testifien, from Latin testificr : testis, witness; see trei- in Indo-European roots + -ficr, -fy.]

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testi·fi·cation (-f-kshn) n.

testi·fier n.

Thesaurus

Noun

1.

testifier - a person who testifies or gives a deposition deponent, deposer witness, witnesser, informant - someone who sees an event and reports what happened