feedback
n. uncountablen. helpful information or opinions about how well you are doing a task. You use it to learn what you did right and what you can improve.
n. information about reactions to a product, a person's performance of a task, or an event, used as a basis for improvement. In technical contexts, it refers to the return of a fraction of an output signal to the input.
The teacher gave me positive feedback on my essay.
We are collecting customer feedback to help us design a more user-friendly mobile application.
Constructive feedback remains a cornerstone of professional development, as it allows employees to align their individual performance with the broader strategic goals of the organization.
From feed + back.
Uncountable in its general sense; it does not take a plural 's'. Often paired with the verbs 'give', 'provide', or 'receive'.
She gave me some feedbacksShe gave me some feedbackFeedback is uncountable and cannot be used in the plural form.