English Reference
noun

amplifier

n.
US /ˈæmpɫəˌfaɪɝ/ UK /ˈæmplɪfˌaɪə/ am·pli·fi·er UK spelling amplifiers

  1. 01 B2 Upper Intermediate Technical Computing

    a piece of electronic equipment that makes a sound or signal louder and stronger.

    an electronic device or circuit used to increase the power, voltage, or current of a signal.

    Simple

    He plugged his electric guitar into the amplifier and started to play.

    In context

    The technician replaced the vacuum tubes in the vintage amplifier to restore the warm, distorted tone preferred by the lead guitarist.

    Usage

    Often shortened to 'amp' in casual conversation and technical contexts.

    amp
  2. 02 B2 Upper Intermediate Music

    a large box that contains a speaker, used by musicians to make their instruments loud enough for an audience.

    a portable housing containing a loudspeaker and often an integrated power amplifier, used for live musical performance.

    Simple

    The roadies carried the heavy amplifiers onto the stage before the concert.

    In context

    Stacking multiple amplifiers allowed the rock band to achieve the necessary sound pressure levels for the outdoor stadium performance.

  3. 03 C2 Proficiency AcademicTechnical Science

    a word like 'really' or 'very' that makes another word stronger.

    a modifier, typically an adverb, that increases the semantic intensity of the word it modifies.

    Simple

    In the sentence 'I am so tired,' the word 'so' is an amplifier.

    In context

    The professor noted that the student's essay relied too heavily on amplifiers like 'totally' and 'completely' rather than using precise vocabulary.

    Teacher's tip

    In general EFL contexts, 'intensifier' is the more common pedagogical term.

    intensifier
    downtoner

From amplify + -er.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated