The term 'Turning Bad' can be described by three crossword solutions: Souring (7 letters), ROTTING (7 letters) and Tainting (8 letters). Souring is the process of becoming acidic or bitter, often referring to food or drink. ROTTING is the decomposition of organic matter due to bacteria or fungi. Tainting is the process of making something impure or contaminated. All three processes are associated with the term 'Turning Bad'.