What is the meaning of discredited?

verb

• Cause to be distrusted or disbelieved.
  • usage: "The paper discredited the politician with its nasty commentary"
  • synonyms: discredit
• Damage the reputation of.
  • usage: "This newspaper story discredits the politicians"
  • synonyms: discredit, disgrace
• Reject as false; refuse to accept.
  • synonyms: disbelieve, discredit

adjective

• Being unjustly brought into disrepute.
  • usage: "a discredited politician"; "her damaged reputation"
  • synonyms: damaged
• Suffering shame.
  • synonyms: disgraced, dishonored, shamed