Slur  —v. (-rr-) 1 pronounce indistinctly with sounds running into one another. 2 mus. Perform (notes) legato. 3 archaic or us put a slur on (a person or a person's character). 4 (usu. Foll. By over) pass over (a fact, fault, etc.) Lightly. —n. 1 imputation of wrongdoing. 2 act of slurring. 3 mus. Curved line joining notes to be slurred. [origin unknown]