Thornberry claimed Saudi reassurances were not credible.
However, investigators from the Justice Department found that many of those witnesses were not credible.
Stephen Kagann, chief economist for Gov. George E. Pataki, said the estimated declines were not credible.
Nevertheless, a judge upheld the 1990 convictions, saying the new witnesses were not credible.
The N.R.C.'s predecessor, the Atomic Energy Commission, asserted that meltdown accidents were not credible events.
In a closing statement, Mr. Breitbart argued that the cooperating witnesses were not credible.
Two current N.B.A. referees, in separate interviews, also said Donaghy's claims were not credible.
The items from Ms. Siddiqui's purse were not credible as evidence, defense lawyers suggested, because they were sloppily handled.
In a 1982 Senate foreign relations committee hearing, Abrams claimed reports of the death toll were "not credible".
She also said that suggestions the volume of sea ice had already declined by 75% already were not credible.
