Slothful/ˈsləʊθfl/ Definition 1 of 1Pro Tip 1/3Negative Connotation Slothful suggests strong disapproval or criticism, it's not a neutral term. His slothful approach to work led to his dismissal. Pro Tip 2/3Informal Usage The term 'slothful' is usually regarded as informal and might not suit formal writing. Our guide was quite slothful, delaying the tour. Pro Tip 3/3Animal Metaphor 'Slothful' comes from 'sloth,' a slow-moving animal; it paints a vivid image of inactivity. They lounged on the beach, slothful as the day was long.