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Definition of "testify" []

  • To make a declaration of truth or fact under oath; submit testimony: witnesses testifying before a grand jury. (verb-intransitive)
  • To express or declare a strong belief, especially to make a declaration of faith. (verb-intransitive)
  • 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. (verb-intransitive)
  • To serve as evidence: wreckage that testifies to the ferocity of the storm. (verb-intransitive)
  • To declare publicly; make known: testifying their faith. (verb-transitive)
  • To state (something) formally as a declaration of fact (verb)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

  • To declare or give (evidence) under oath, esp in court (verb)
  • To be evidence (of); serve as witness (to) (verb)
  • To declare or acknowledge openly (verb)

www.Collinsdictionary.com (c) HarperCollins Publishers Ltd 2016

Use "testify" in a sentence
  • "Having Cheney testify is truly pointless – he's made a career of lying and seems to be quite good at it."
  • "That, as many ex-girlfriends of mine will testify, is quite untrue."
  • "At an inquiry into the tasering death of amentally ill man in Nova Scotia, aclin­ical psychol­o­gist who has been called to testify is taking on the concept of “excited delirium”."