A backless shoe is a type of footwear that does not have a heel or back support. The term 'backless shoe' can refer to a variety of different styles, including mules (4 letters), ottomans (7 letters), divans (5 letters), and stools (5 letters). Mules are a type of slip-on shoe with no back, while ottomans are a type of slipper with a low heel and no back. Divans are a type of sandal with a flat sole and no back, and stools are a type of clog with a thick sole and no back.