'reformable' originates from Latin, specifically the word 'reformabilis,' where 're-' meant 'again' and 'formare' meant 'to form or shape.'

'reformabilis' transformed into the Old French word 'reformable,' and eventually became the modern English word 'reformable.'

Initially, it meant 'capable of being formed again,' but over time it evolved into its current meaning of 'capable of being reformed or improved.'