The term 'SLIPS ON A SLIP?' can be solved by the word 'ERRATA', which is a six-letter word. Erratum is a Latin word meaning 'MISTAKE' and is used to refer to an error in a book, article, or other published text. It is also used to refer to a list of corrections that are made to a published work after it has been printed. In this context, 'slips on a slip' could refer to a MISTAKE made in a published work that needs to be corrected.