cred ‧ i ‧ ble /ˈkredəb ə l, ˈkredɪb ə l/ BrE AmE adjective
[ Word Family: adverb : ↑ incredibly , ↑ credibly , ↑ incredulously ; adjective : ↑ incredible , ↑ credible , ↑ incredulous ; noun : ↑ credibility , ↑ incredulity ]
[ Date: 1300-1400 ; Language: Latin ; Origin: credibilis , from credere ; ⇨ ↑ credence ]
deserving or able to be believed or trusted ⇨ incredible
credible explanation/story/account etc
He was unable to give a credible explanation for his behaviour.
Her excuse was barely credible.
credible threat/challenge/force etc
Can Thompson make a credible challenge for the party leadership?
a credible alternative to nuclear power
—credibly adverb