The term 'Went Bad, As Milk' can be summarized by two crossword solutions: CURDLED (7 letters) and soured (6 letters). Curdling is a process in which milk separates into solid and liquid components due to the action of bacteria or enzymes. This process is often used to make cheese and yogurt. Souring is a process in which milk is exposed to bacteria, resulting in a sour taste. Both processes are common causes of milk going bad.