Credible

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late Middle English: from Latin credibilis, from credere ‘believe’.

wiktionary

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From Middle English credible, borrowed from Old French credible, from Latin crēdibilis(“worthy of belief”), from crēdō(“believe”); see credit.

etymonline

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credible (adj.)

"believable, worthy of belief, capable of being believed, involving no impossibility; of known or obvious veracity or competence," late 14c., from Latin credibilis "worthy to be believed," from credere "to believe" (see credo). Related: Credibly.