feedback

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Noun[change]

Singular
feedback

Plural
none

  1. (uncountable) A reaction or opinion of something.
    I'd really like some feedback on my poem.
    I've been hearing really positive feedback about the new library.
    After you hand in your essay, I will give you your grade and feedback regarding the content.
  2. (uncountable) The high-pitched noise that you can hear when there's a loop between a microphone and a speaker.