Open English Wordnet
Nouns
(n)defile, gorgea narrow pass (especially one between mountains) Verbs
(v)tarnish, stain, maculate, sully, defilemake 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” (v)foul, befoul, defile, maculatespot, stain, or pollute“The townspeople defiled the river by emptying raw sewage into it”