Synonyms for coarse

modified

1. Not fine or smooth

   rough, harsh, grainy, granular; see crude 1, rough 1.

2. Lacking in refinement

   vulgar, crude, unrefined, indelicate, unpolished, rude, rough, uncouth, crass, gross, obscene, ribald, indecent; see also lewd 1, ribald, rude 1, vulgar 1.

3. Of poor quality

   inferior, second-rate, common; see common 1, poor 2.

coarse, in this comparison, implies such a lack of refinement in manners or speech as to be offensive to one's aesthetic or moral sense coarse laughter; gross suggests a crudeness or coarseness that is brutish or repellent gross table manners; indelicate suggests impropriety, immodesty, or tactlessness an indelicate remark; vulgar emphasizes a lack of culture, refinement, or good taste vulgar ostentation, or may imply indecency vulgar language; obscene is used of that which is offensive to decency and implies lewdness obscene gestures; ribald suggests such mild indecency or lewdness as might bring laughter from those who are not too squeamish ribald jokes