The term 'unoriginal work' can be described by two crossword solutions: 'RETREAD' (7 letters) and 'rehash' (6 letters). RETREAD is a term used to describe the process of taking an old tire and giving it new treads, while rehash is a term used to describe the process of taking an old idea and presenting it in a new way. Both terms are used to describe unoriginal work, as the ideas or products being presented are not new or original.