'inactivable' originates from Latin, specifically the word 'inactivabilis,' where 'in-' meant 'not' and 'activabilis' meant 'capable of being activated.'

'inactivabilis' transformed into the French word 'inactivable,' and eventually became the modern English word 'inactivable.'

Initially, it meant 'not capable of being activated,' and this meaning has largely remained the same in modern usage.