1. 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"

2. spot, stain, or pollute;

"The townspeople defiled the river by emptying raw sewage into it"

1. morally blemished; stained or impure

2. spotted or blotched