'reversibleness' originates from Latin, specifically the Late Latin word 'reversibilis', where the prefix 're-' meant 'back' and the root 'vertere' (seen as 'vers-') meant 'to turn'.

'reversibleness' changed from the Late Latin 'reversibilis' into English via the adjective 'reversible' (through Old French/Latin influence), and the English noun-forming suffix '-ness' was later added to produce 'reversibleness'.

Initially it meant 'able to be turned back' or 'capable of reversal', and over time this basic sense was preserved while the noun came to denote the general property or condition of being reversible.