sləuθ n. 1 laziness or indolence; reluctance to make an effort. 2 any slow-moving nocturnalmammal of thefamily Bradypodidae or Megalonychidae of S. America, having long limbs andhooked claws forhanging upside down from branches of trees. øsloth bear a large-lipped blackshaggy bear, Melursus ursinus, of India. [ME f. SLOW + -TH(2)]