Coarse can mean rough to the touch or vulgar. It's good to have coarse sand paper, but not good to have coarse manners.

Do you lick your dinner plate, wipe your nose on your sleeve, and generally behave like an oaf? No, of course not. You're the kind of person who reads online dictionaries. But if you did do any of things, you'd be coarse — that is, unrefined, boorish, and downright vulgar. Coarse can apply to a wide variety of things other than behavior. If something is of poor quality, cheap and inferior, it's considered coarse.

Definitions of coarse
  1. adjective
    of textures that are rough to the touch or substances consisting of relatively large particles
    coarse meal”
    coarse sand”
    “a coarse weave”
    synonyms: harsh
    coarse-grained, large-grained
    not having a fine texture
    coarse-grained, farinaceous, grainy, granular, granulose, gritty, mealy
    composed of or covered with particles resembling meal in texture or consistency
    made grainy or formed into granules
    plush-like, plushy
    (of textures) resembling plush
    loose, open
    (of textures) full of small openings or gaps
    rough, unsmooth
    having or caused by an irregular surface
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    of textures that are smooth to the touch or substances consisting of relatively small particles
    close, tight
    of textiles
    close-grained, fine-grained
    dense or compact in structure or texture, as a wood composed of small-diameter cells
    as fine and powdery as dust
    resembling flour in fine powdery texture
    not having granules
    fine-grained, powdered, powdery, pulverised, pulverized, small-grained
    consisting of fine particles
    have fine or very small constituent particles
    of extremely fine size or texture
    having a surface free from roughness or bumps or ridges or irregularities
    show more antonyms...
  2. adjective
    lacking refinement or cultivation or taste
    “he had coarse manners but a first-rate mind”
    synonyms: common, rough-cut, uncouth, vulgar
    (used of persons and their behavior) not refined; uncouth
  3. adjective
    of low or inferior quality or value
    “"of what coarse metal ye are molded"- Shakespeare”
    synonyms: common
    of low or inferior quality
Word Family

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