befoul, begrime, besmear, besmirch, biota, blemish, blot, blur, contaminate, daub, decry, defame, defile, dirty, fell, filth, foul, foulest, grime, litter, mar, pollute, prostrate, slander, smear, smirch, smudge, smut, soil,
speck, splodge, splotch, spot, stain, sully, taint, tamper, tarnish, topple, vitiate