rude/unrefined; cruel/violent/savage/raging/drastic; stern/severe/bitter; hard; rough/uneven/shaggy, coarse, harsh; embossed/encrusted; (mint condition coins); sharp/pointed, jagged/irregular, rugged/severe; sour, pungent, grating, keen; uneven/rough/harsh place/land; adversity, difficulties (esp. pl.); roughen; sharpen, point, tip; enrage, make fierce/violent; grate on; aggravate;