blemish (part of speech: verb)
dot, speck, blemish, notch, pockmark, deface, splotch, scar, fleck, disfigure, check, tarnish, mar, hurt, deform, blister, fracture, flaw, distort, blot, nick, chip, crack, mark, spot, gash, damage, score, defect, stain, scuff, slit, taint, scrape, kink, discolor, freckle, scratch, spoil, hack
detract (part of speech: verb)
chafe (part of speech: verb)
- Stones which lie underneath the glacier and are pushed along by it sometimes adhere to the ice, and as the mass glides slowly along at the rate of a few inches, or at the utmost 2 or 3 feet per day, abrade, groove, and polish the rock, and the larger blocks are reciprocally grooved and polished by the rock on their lower sides. - "The Antiquity of Man", Charles Lyell.
- Waves abrade the shore and strew the debris worn from it over the lake bed. - "The Elements of Geology", William Harmon Norton.
- Compare the ways in which different agents abrade. - "The Elements of Geology", William Harmon Norton.