adjective coarser coars′er, coarsest coars′·est

1. of inferior or poor quality; common coarse fare
2. consisting of rather large elements or particles coarse sand
3. not fine or delicate in texture, structure, form, etc.; rough; harsh coarse features, coarse cloth
4. for rough or crude work or results a coarse file, coarse measurements
5. lacking in refinement or good taste; vulgar; crude a coarse joke

Etymology: specialized var. of course in sense of “ordinary or usual order” as in of course