'proficiency' originates from Latin, specifically the word 'proficientia,' where 'pro-' meant 'forward' and 'facere' meant 'to make or do.'

'proficientia' transformed into the Old French word 'proficience,' and eventually became the modern English word 'proficiency' through Middle English.

Initially, it meant 'advancement or progress,' but over time it evolved into its current meaning of 'skill or competence.'