Positive feedback is a process in which the output of a system is used to increase the input of the same system. In this way, the output is amplified and the system is able to reach a higher level of performance. The crossword solutions for the term positive feedback are YEA and YESES. YEA is an informal way of saying yes, while YESES is the plural form of yes. Both words indicate agreement and approval, which is an important part of positive feedback.