Synonyms for Coarse-grained:

adj.

•all (adjective)
grainy, granular, mealy, granulose, farinaceous, gritty.
•coarse (adjective)
grainy, homespun, crude, unpolished, granular.
•grainy (adjective)
gritty, rough.
•vulgar (adjective)
boorish, ignominious, crass, revolting, broad, unrefined, garish, barnyard, outlandish, base, salty, inelegant, brazen, chintzy, degraded, obscene, earthy, coarse, rough, undignified, barbaric, profane, sordid, rank, gaudy, homespun, ill-bred, sleazy, common, unbecoming, depraved, scandalous, rude, gross, raw, offensive, repulsive, unpolished, animal, glaring, in bad taste, brutish, colloquial, cockney, tasteless, graceless, low, clumsy, tactless, cheap, idiomatic, unseemly, ignoble, tawdry, crude, vulgar, indelicate, philistine, shameless.

n.

•coarse-grained (noun)
granulose, coarse, granular, mealy, gritty, grainy, farinaceous, sandy.

Other synonyms:

•Other relevant words:
grainy, mealy, granular, sandy, farinaceous, gritty, granulose.