WordNet sense 1 (morally blemished; stained or impure):

defiled

WordNet sense 2 ((used of persons or behaviors) immoral or obscene):

impure

WordNet sense 3 (make dirty or spotty, as by exposure to air; also used metaphorically):

defile, stain, sully, tarnish, defile

WordNet sense 4 (spot, stain, or pollute):

befoul, foul

WordNet sense 5 (soiled or likely to soil with dirt or grime):

dirty, unclean, soiled