Tardy/ˈtɑːrdi/ Definition 1 of 3Pro Tip 1/2Connotation of Rudeness Using 'tardy' can imply rudeness or disregard for others' time when being late. His tardiness was taken as rudeness by his peers. Pro Tip 2/2Professional Context 'Tardy' is often used in professional or formal settings to describe lateness. Your tardy arrival at meetings must be addressed.