Credible/ˈkredəbl/ Definition 1 of 2Pro Tip 1/3Assessing Trust Consider if information seems reasonable and if the source has a history of accuracy. He provided credible sources to support his thesis. Pro Tip 2/3Evidence Over Opinion Preference for facts or data over personal beliefs when determining credibility. Despite his skepticism, the experiment's results were credible. Pro Tip 3/3Context Matters Certain phrases alongside 'credible' can heighten its impact, like 'credible witness'. The judge considered the eyewitness to be a credible witness.