'accessible' originates from Latin, specifically the word 'accessibilis,' where 'accessus' meant 'approach' and '-ibilis' meant 'able to be.'

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

Initially, it meant 'able to be approached,' but over time it evolved into its current meanings of 'able to be reached or entered' and 'easy to understand or appreciate.'