tarnish, stain, maculate, sully, defile -- (make dirty or spotty, as by exposure to air; also used metaphorically; "The silver was tarnished by the long exposure to the air"; "Her reputation was sullied after the affair with a married man")
foul, befoul, defile, maculate -- (spot, stain, or pollute; "The townspeople defiled the river by emptying raw sewage into it")
Overview of adj maculate
The adj maculate has 2 senses
defiled, maculate -- (morally blemished; stained or impure)