Smooth : having an even and regular surface; free from perceptible projections, lumps, or indentations.Ugly : unpleasant or repulsive, especially in appearance.Awkward : causing difficulty; hard to do or deal with.Hard : solid, firm, and rigid; not easily broken, bent, or pierced.Rough : having an uneven or irregular surface; not smooth or level.Antonym of Smooth is Rough