damaging (part of speech: verb)
blemishing (part of speech: verb)
distorting, blotting, deforming, dotting, discoloring, splotching, scuffing, blistering, staining, specking, disfiguring, tainting, spoiling, scraping, gashing, checking, nicking, spotting, tarnishing, abrading, cracking, hacking, flawing, scoring, notching, flecking, freckling, chipping, kinking, defacing, damaging, hurting, slitting, scratching, marking, blemishing, fracturing, scarring, defecting
erring (part of speech: verb)
- The " star," after a sharp and rather startled look at the newcomer, deliberately " cut" four stanzas and rushed somewhat hastily through the concluding verse, marring a tremendous climax. - "Green Fancy", George Barr McCutcheon.
- It may be imagined that I kept an exceedingly anxious eye on the barometer throughout that day, for I realised that the weather would have much to do with the making or marring of our fortunes on the eventful night. - "The Log of a Privateersman", Harry Collingwood.
- To- morrow"- rising and running to the glass, and pushing back her disordered hair from her face, that is lovely in spite of marring tears-" to- morrow I shall be gayer, brighter than he has ever yet seen me. - "Molly Bawn", Margaret Wolfe Hamilton.