taint

[1]	defile , sully , tarnish , sully , corrupt , stain , stigmatize , cloud , smear , harm , hurt , damage , debase , vitiate , blacken , foul , contaminate , pollute , dirty , muddy , smirch , besmirch , blemish , soil , corrupt , spoil , defile , ruin , destroy
[2]	infect

[1]	stain , contamination , blot , blemish , slur , tinge , tincture , (black/bad) mark , stigma , imperfection , flaw , scar , defect , discredit , dishonour