Synonyms for Unsmooth (same or very similar meaning)
WordNet sense 1 (abounding in rocks or stones):
rockyWordNet sense 2 (covered with or full of bumps):
bumpyWordNet sense 3 (causing abrasion):
scratchyWordNet sense 4 (having or caused by an irregular surface):
roughFrom the ODE community, based on WordNetadd/edit