The term 'KEEP ON' can be broken down into three crossword solutions: PERSIST (7 letters), TABS (4 letters), and PERSEVERE (9 letters). PERSIST means to continue doing something despite difficulty or opposition, while PERSEVERE is to continue in a course of action even in the face of difficulty or with little or no prospect of success. TABS is an acronym for 'Totally Awesome Brownies and Stuff, ' which is a popular bakery chain in the United States. All three words are related to the idea of continuing on despite obstacles, and they all have positive connotations.