Testify Definition

testified, testifies, testifying
testified, testifies, testifying
To give testimony in a legal case or before a deliberative body.
Witnesses testifying before a grand jury.
American Heritage
To express or declare a strong belief, especially to make a declaration of faith.
American Heritage
To make a serious declaration to substantiate a fact; bear witness or give evidence, esp. under oath in court.
Webster's New World
To be evidence of; indicate.
Webster's New World
To bear witness to; affirm; declare, esp. under oath in court.
Webster's New World

Origin of Testify

  • From Middle English testifien, from Old French testifier, from Latin testificārÄ«, present active infinitive of testificor (“I bear witness"), from testis (“a witness") + facere (“to make") (see -fy).

    From Wiktionary

  • Middle English testifien from Latin testificārī testis witness trei- in Indo-European roots -ficārī -fy

    From American Heritage Dictionary of the English Language, 5th Edition

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