discredit

(noun) the state of being held in low esteem. Synonyms: disrepute. Examples: "Your actions will bring discredit to your name." "Because of the scandal the school has fallen into disrepute."

(verb) cause to be distrusted or disbelieved. Example: "The paper discredited the politician with its nasty commentary."

(verb) damage the reputation of. Synonyms: disgrace. Example: "This newspaper story discredits the politicians."

(verb) reject as false; refuse to accept. Synonyms: disbelieve.