discredit
dis-cred-it
verb
To cause people to stop believing or respecting someone or something.
"The scandal discredited the politician."
noun
The state of no longer being believed or respected; disgrace or dishonour.
"His actions brought great discredit upon the family."
Thesaurus
Synonyms: disrepute, disbelieve, disgrace
Antonyms: believe, reputation, repute