coarse in WordNet English dictionary

1. of textures that are rough to the touch or substances consisting of relatively large particles
   "coarse meal"; "coarse sand"; "a coarse weave"
   coarse  harsh 
   
2. of low or inferior quality or value
   "of what coarse metal ye are molded"- Shakespeare; "produced...the common cloths used by the poorer population"
   coarse  common 
   
3. lacking refinement or cultivation or taste
   "he had coarse manners but a first-rate mind"; "behavior that branded him as common"; "an untutored and uncouth human being"; "an uncouth soldier--a real tough guy"; "appealing to the vulgar taste for violence"; "the vulgar display of the newly rich"
   coarse  common  rough-cut  uncouth  vulgar