Definition of feedback
1a : the transmission of evaluative or corrective information about an action, event, or process to the original or controlling source also : the information so transmitted
b : the partial reversion (see reversion sense 3a) of the effects of a process to its source or to a preceding stage
2 : the return to the input of a part of the output of a machine, system, or process (as for producing changes in an electronic circuit that improve performance or in an automatic control device that provide self-corrective action)
3 : a rumbling, whining, or whistling sound resulting from an amplified or broadcast signal (such as music or speech) that has been returned as input and retransmitted
Keep scrolling for more
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
Semantic Drift Quiz

- Which of the following was once a synonym for fun?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Semantic Drift Quiz A challenging quiz of changing words.
Take the quiz
Challenging Vocabulary Quiz Returns! No tricks, just difficult words.
Take the quiz
Spell It Can you spell these 10 commonly misspelled words?
Take the quiz
Dictionary Devil The dictionary has been scrambled—can you put i...
Play the game


















Share feedback
Time Traveler for feedback
The first known use of feedback was in 1919
See more words from the same year