cred·i·ble \ˈkredəbəl\adjective Etymology: Middle English, from Latin credibilis, from credere + -ibilis -ible 1.: capable of being credited or believed : worthy of belief < credible information > : entitled to confidence : trustworthy < a credible witness > 2.obsolete: credulous 3.obsolete: creditable, reputable • cred·i·bly\-blē, -li\adverb