Taint
Part of speech: verb
Definition: To contaminate or corrupt (something) with an external agent, either physically or morally. To spoil (food) by contamination.
Part of speech: noun
Definition: A thrust with a lance, which fails of its intended effect. An injury done to a lance in an encounter, without its being broken; also, a breaking of a lance in an encounter in a dishonorable or unscientific manner. A contamination, decay or putrefaction, especially in food A mark of disgrace, especially on one's character The perineum.
Sully
Part of speech: verb
Definition: to soil or stain; to dirtyto damage or corrupt