The phrase "credibility gap" means there is a lack of trust or belief in someone or something. It suggests that there is doubt about the honesty or reliability of information or statements being presented. Full definition
There's an obvious credibility gap when some of the top proponents of ancestral eating are clearly carrying some excess baggage. (lauraschoenfeldrd.com)
The gender credibility gap means that women are less likely to be believed when they make certain claims, because they are believed to be inherently less competent or trustworthy. (macleans.ca)
I suspect new home sales numbers will be a persistent reminder of the Fed's credibility gap for years to come. (aaronlayman.com)