The term 'DEVIL's Advocacy' is derived from the Catholic Church, where a DEVIL's Advocate was appointed to argue against the canonization of a saint. The term has since been used to describe a person who takes a contrary position for the sake of argument. The crossword solution for this term is SIN, which is an acronym for 'Stimulate Inventive Negativity'. This phrase is used to describe the process of challenging assumptions and ideas in order to generate new solutions.