composed of relatively large parts or particles

The beach had rough, coarse sand.

lacking in fineness or delicacy of texture, structure, etc.

The stiff, coarse fabric irritated her skin.

harsh; grating.

lacking delicacy, taste, or refinement; unpolished

He had coarse manners but an absolutely first-rate mind.

of inferior or faulty quality; common; base.

vulgar; obscene; crude

His coarse language angered us.

(of metals) unrefined.

(of a metal file) having the maximum commercial grade of coarseness.

adjective

gentle , nice , polite , refined , sophisticated , delicate , smooth , soft

adjective

base , bawdy , blue * , boorish , brutish , cheap , common , crass , crude , dirty , earthy , filthy , foul , foul-mouthed , gross , gruff , immodest , impolite , improper , impure , incult , indelicate , inelegant , loutish , low , lowbred , lowdown and dirty , mean , nasty , obscene , off-color , offensive , raffish , raunchy , raw , ribald , rough , roughneck * , rude , scatological , smutty * , tacky , uncivil , uncouth , uncultivated , uncultured , unrefined , vulgar , vulgarian , chapped , coarse-grained , grainy , granular , harsh , homespun , inferior , loose , lumpy , mediocre , particulate , poor quality , rough-hewn , rugged , unfinished , unpolished , unprocessed , unpurified , barbarian , barbaric , churlish , ill-bred , philistine , tasteless , uncivilized , barnyard , broad , fescennine , lewd , profane , scatologic , scurrilous , smutty , gritty , cragged , craggy , ironbound , jagged , ragged , scabrous , uneven , artless , barbarous , blatant , brutal , callow , disgusting , gauche , hard , immature , incondite , indecent , inurbane , loud , plebeian , rank , raucous , repulsive , squalid , thick , tramontane , troglodytic , unbolted , unchaste , vile