#1 roughness n. [raggedness] a texture of a surface or edge that is not smooth but is irregular and uneven. wn
#2 roughness n. [harshness] the quality of being unpleasant (harsh or rough or grating) to the senses. wn
#3 roughness n. [crudeness] an unpolished unrefined quality; "the crudeness of frontier dwellings depressed her". wn
#4 roughness n. [choppiness, rough water] used of the sea during inclement or stormy weather. wn
#5 roughness n. [rowdiness, rowdyism, disorderliness] rowdy behavior. wn
vizzz