Discredit
Part of speech: verb
Definition: To harm the good reputation of a person; to cause an idea or piece of evidence to seem false or unreliable.
Example sentence: I do have some very strong thoughts on Glenn Simpson, who is one of the founders of Fusion GPS, based on his conduct in trying to discredit me and Sergei Magnitsky.
Disrepute
Part of speech: noun
Definition: Loss or want of reputation; ill character; disesteem; discredit.
Part of speech: verb
Definition: To bring into disreputation; to hold in dishonor.