Sloppiness/ˈslɑːpinəs/ Definition 1 of 3Pro Tip 1/3Negative Impression Using 'sloppiness' may suggest someone lacks professionalism or attention to detail. The CEO noted the sloppiness of the report's format. Pro Tip 2/3Physical Appearance 'Sloppiness' often relates to one's untidy dress or appearance. He apologized for his sloppiness, having spilled coffee on his shirt. Pro Tip 3/3Not Just Visual 'Sloppiness' can go beyond visual mess, implying a carefree or negligent attitude. Sloppiness in keeping time can frustrate others.