The term FILTHY PLACES can be broken down into two crossword solutions: STIES (5 letters) and PIGSTIES (8 letters). Sties are small, dirty places that are often associated with animals, such as a pigsty. PIGSTIES are similar to sties, but they are specifically designed for pigs and are usually larger than sties. Both sties and PIGSTIES are considered to be filthy places due to the amount of dirt and waste that accumulates in them.