Antonyms for Smooth (opposite meaning)
WordNet sense 1 ((music) marked by or composed of disconnected parts or sounds; cut short crisply):
disconnected, staccatoWordNet sense 2 (of the margin of a leaf shape; having the edge cut or fringed or scalloped):
roughWordNet sense 3 (causing or characterized by jolts and irregular movements):
bumpyWordNet sense 4 (make rough or rougher):
roughenFrom the ODE community, based on WordNetadd/edit