The term 'keeps going' can be described by the crossword solutions of PERSISTS (8 letters), sustains (8 letters), lasts (5 letters), extends (7 letters), runs on (6 letters), and pushes on (8 letters). PERSISTS means to continue to exist or endure over a prolonged period of time, while sustains implies to maintain or support something. Lasts suggests that something continues for a long period of time, and extends implies to make something longer in duration or scope. Runs on is an expression that means to continue without interruption, and pushes on implies to continue despite difficulties. All of these words describe the concept of continuing or persisting over a long period of time.