8 letters · 13 points in Scrabble
adjective capable of being believed
adjective (a common but incorrect usage where `credulous' would be appropriate) credulous
adjective appearing to merit belief or acceptance
originFrom Middle English credible, borrowed from Middle French credible, from Latin crēdibilis (“worthy of belief”), from crēdō (“believe”); see credit.
Etymology from Wiktionary, CC BY-SA 3.0