The word "shabbiest" indicates something that is unattractive, worn out or in poor condition. There are several synonyms that can be used in place of shabbiest, including tattiest, scruffiest, and dingiest. Other synonyms to describe a place or thing in a similar way include rundown, seedy, dilapidated, and derelict. These words suggest neglect, disrepair, or abandonment. On the other hand, the word "shabbiest" can also mean something that is poorly dressed, and in this case, words like sloppiest, scruffiest, and frumpiest could be used instead. Whatever the context, these synonyms portray a sense of untidiness and unattractiveness.