discredit

nouns

the state of being held in low esteem
"your actions will bring discredit to your name"; "because of the scandal the school has fallen into disrepute"

verbs

cause to be distrusted or disbelieved
"The paper discredited the politician with its nasty commentary"
is a type of (narrower)
bar from attention or consideration
"She dismissed his advances"
damage the reputation of
"This newspaper story discredits the politicians"
reject as false; refuse to accept