SQUALID DIGS is a term used to describe living conditions that are extremely poor and unhygienic. The term can be broken down into three parts: STY (3 letters), RATTRAP (7 letters), and SLUM (4 letters). A STY is a pigpen, which is an area where pigs are kept and is often dirty and smelly. A RATTRAP is a place that is run-down and dilapidated, and a SLUM is an area of a city that is characterized by poverty and substandard housing. Together, these three words paint a picture of a living space that is in very poor condition.