An unfinished story is a narrative that has not been completed, either due to the author's choice or because the author has not had the opportunity to finish it. The term 'unfinished story' can refer to a work of fiction, such as a novel, short story, or screenplay, or a non-fiction work, such as an autobiography or memoir. The crossword solution for the term 'unfinished story' is ATTIC, which could refer to a physical location where unfinished stories are stored, such as in a writer's ATTIC.