'fallible' originates from Latin, specifically the word 'fallibilis,' where 'fallere' meant 'to deceive or err.'

'fallibilis' transformed into the Old French word 'fallible,' and eventually became the modern English word 'fallible' through Middle English.

Initially, it meant 'capable of being deceived or mistaken,' but over time it evolved into its current meaning of 'capable of making mistakes or being wrong.'