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From Middle English amplifiyen, from Old French amplifier, from Latin amplificare (to enlarge), from amplus (large) + facere (to make). See ample , equivalent to ample +‎ -ify.


  • (General American) IPA(key): /ˈæmp.lɪ.faɪ/
  • (file)
  • Hyphenation: am‧pli‧fy


amplify (third-person singular simple present amplifies, present participle amplifying, simple past and past participle amplified)

  1. (transitive) To render larger, more extended, or more intense.
    amplify the loudspeaker
    amplify a telescope
    amplify a microscopes
    amplify the message
    amplify an image on the screen
    amplify the impact of the project
  2. (transitive, rhetorical) To enlarge by addition or commenting; to treat copiously by adding particulars, illustrations, etc.; to expand.
    • 1700, John Dryden, Fables, Ancient and Modern:
      Troilus and Cressida was written by a Lombard author, but much amplified by our English translator.
    • 1981 August 8, Nancy Wechsler, “Michigan May Register 'Sex Offenders'”, in Gay Community Journal, page 3:
      GCN asked Gill just who this law was aimed at. "Child abusers" he responded. He would not amplify on what he meant by child abusers.
  3. (transitive) To increase the amplitude of something, especially of an electric current.
    amplify a signal
  4. (translation studies) To add content that is not present in the source text to the target text, usually to improve the fluency of the translation.

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