feedback /ˈfiːdˌbæk/noun 3verb 3forms 3 noun3 •The part of an output signal that is looped back into the input to control or modify a system. •Critical assessment of a process or activity or of their results.After you hand in your essays, I will give both grades and feedback. •The high-pitched howling noise heard when there is a loop between a microphone and a speaker.A loud feedback screech blasted from a speaker on the wall. It was a hailing signal of some kind. — 2002 verb3 •To provide informational feedback to.His employees feedbacked him a lot more than he wanted. •To convey by means of specialized communications channel.Customers feedbacked their complaints and some praise. •To generate the high-frequency sound by allowing a speaker to cause vibration of the sound generator of a musical instrument connected by an amplifier to the speaker.The show ended with a riot of feedbacking guitars. formsfeedbacked · feedbacking · feedbacks