feedback the return of a portion of the output of a process or system to the input,especially when used to maintain performance or to control a system or process the return of information about the result of a process or activity;an evaluative response Most of the feedback we've received so far has been positive. The new schoolmaster asked the students for feedback on the new curriculum.feedback ❖ the return of a portion of the output of a process or system to the input, especially when used to maintain performance or to control a system or process ❖ the return of information about the result of a process or activity; an evaluative response Most of the feedback we’ve received so far has been positive. The new schoolmaster asked the students for feedback on the new curriculum