The crossword solution for the term 'Frat Alternative' is 'Dorm', which is a four-letter word. A dormitory, commonly referred to as a dorm, is a type of housing typically found on college and university campuses. Dorms provide a communal living space for students, often with shared bedrooms, bathrooms, and common areas. Dorms are an alternative to fraternities and sororities, which are social organizations that provide housing for their members.