'demolitionist' originates from the word 'demolition,' which comes from the Latin word 'demolitiō,' where 'de-' meant 'down' and 'molīrī' meant 'to build.'

'demolitiō' transformed into the French word 'démolition,' and eventually became the modern English word 'demolition' through Middle English.

Initially, it meant 'the act of pulling down or destroying,' and this meaning has largely remained the same in modern usage.