Bootee is a word that is used to refer to a soft, usually woolen, sock or a slipper worn indoors. However, there are several synonyms for the word 'bootee,' including ankle boot, bootie, booty, sock boot, and slipper sock. These synonyms are used interchangeably to describe the same type of footwear, depending on the context. Ankle boots and booties are more fashionable versions of the traditional bootee, while booty is a playful and casual term. Sock boots and slipper socks are a popular trend and a perfect combination of comfort and style, making them an ideal choice for lounging at home.