discredited

adj

1. Considered invalid, unreliable, or untrustworthy.

   “A reputedly valiant but discredited warrior is speared to death by killers in the service of another warrior, who is also reputedly valiant but even more discredited: it is a false denouement for a false tragedy .”

   “I will tell you though, that as a scientific theory, "Darwinism" is probably THE most discredited theory ever put forth by ANY scientist at ANY time in the history of mankind; and why it is so desperately hung onto, and clung to by educators and scientists the way it is, well it's way beyond me.”

   “Antonia, a day-care center owner in Jardim Sudoeste, said, "Honestly, not just for myself, but for many others, the politician is very discredited. I feel like I have no father or mother.””

   “Films perpetuate completely discredited historical theories about events (director Oliver Stone based his film JFK on a discredited report on the Kennedy assassination; see Section 13.6).”

verb

1. (form-of, participle, past)simple past and past participle of discredit