Fleahouse is a derogatory slang term for a cheap and dirty lodging house. It is often associated with poverty and undesirable living conditions. However, there are several synonyms that can be used to describe such establishments more politely. Some of these synonyms include boarding house, rooming house, hostel, lodging house, guesthouse, inn, and tavern. Each of these words connotes a different level of comfort and cleanliness, ranging from basic accommodation to more upscale lodgings. While the word fleahouse may have negative connotations, using these synonyms can help to avoid offense and convey a more nuanced description of such establishments.