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

'accessibilis' transformed into the Old French word 'accessible', and eventually became the modern English word 'accessible', with 'accessibly' as its adverbial form.

Initially, it meant 'able to be approached', and over time it evolved into its current meaning of 'in a manner that is easy to approach or use'.