- habitual disinclination to exertion; laziness; indolence: Indifference, negligence, and sloth have no place in the classroom.
- any of several slow-moving, arboreal, tropical American edentates of the family Bradypodidae, having a long, coarse, grayish-brown coat often of a greenish cast caused by algae, and long, hooklike claws used in gripping tree branches while hanging or moving along in a habitual upside-down position.
- a pack or group of bears.
- any of several shaggy-coated arboreal edentate mammals of the family Bradypodidae, esp Bradypus tridactylus (three-toed sloth or ai) or Choloepus didactylus (two-toed sloth or unau), of Central and South America. They are slow-moving, hanging upside down by their long arms and feeding on vegetation
- reluctance to work or exert oneself
