Defile (noun)
definition:
a narrow pass (especially one between mountains)
Synonyms
GorgeDefile (verb)
definition:
spot, stain, or pollute
example:
"The townspeople defiled the river by emptying raw sewage into it"
Synonyms
FoulDefile (verb)
definition:
make dirty or spotty, as by exposure to air
Synonyms
StainDefile (verb)
definition:
place under suspicion or cast doubt upon
Synonyms
Corrupt