fallibility

The word 'fallibility' is built upon the Latin verb fallere, which originally meant "to trip," "to deceive," or "to be mistaken." This root is embedded in English words like 'false' and 'fallacy,' carrying the core idea of error or deception. The suffix -ibility is a compound of -ible (capable of) and -ity (state or quality), ultimately tracing back to Latin -ibilitas. Thus, the literal construction "capable of erring" evolved into the modern abstract noun denoting the inherent human or systemic quality of being prone to mistake or imperfection. Its philosophical and theological usage, emphasizing a fundamental limitation of human knowledge, solidified this meaning in the early modern period.

Structure: fall (deceive, err) + ibility (capacity or quality) - fall: From Latin fallere (to deceive, to be mistaken). In this word, it functions as the verb root meaning "to err" or "to deceive." - ibility: A suffix from Latin -ibilitas, via Old French -ibilité, forming nouns expressing a capacity, susceptibility, or quality from adjectives ending in -ible. It functions as a noun-forming suffix meaning "the quality or capacity of being [adjective]."