bloody, blot, blotch, blur, brand, dab, daub, ensanguine, eyesore, fleck, flick, flyspeck, macula, maculation, macule, mark, patch, smear, smirch, smouch, smudge, smut, smutch, spatter, speck, speckle, splash, splatter, splotch, spot, stain, stigma, taint, tarnish