credibility - definition and synonyms

noun [uncountable] 

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  1. qualities that someone has that make people believe or trust them

    The jury had doubts about the credibility of some of the witnesses.

    undermine someone’s credibility (=damage it):

    Claire knew that to argue any more would only undermine her credibility.

    gain/lose credibility:

    The government is losing credibility by its failure to act quickly.

    1. a.
      used about things such as systems, statements, or beliefs

      The credibility of your work will suffer if you get your facts wrong.