The term 'KEPT UP' can be summarized by two crossword solutions: SUSTAINED (9 letters) and BRACED (6 letters). Both words refer to the act of maintaining something, either physically or mentally. Sustained implies that something is being held up over a period of time, while BRACED suggests that something is being supported in order to remain stable. In both cases, the idea is that something is being kept up in order to remain in its current state.