The crossword solution for the term 'Cinderella Meanie' is 'Stepsister, ' which is a 10-letter word. Stepsisters are characters in the classic fairytale Cinderella, written by the Brothers Grimm in 1812. In the story, Cinderella is mistreated by her two stepsisters, who are jealous of her beauty and kind nature. The stepsisters are often referred to as meanies, hence the term 'Cinderella Meanie.'