'collectively-backed' originates from the word 'collective,' which comes from the Latin word 'collectivus,' meaning 'gathered together.' The suffix '-ly' is used to form adverbs, and 'backed' is derived from the verb 'back,' meaning 'to support.'

'collectivus' transformed into the Old French word 'collectif,' and eventually became the modern English word 'collective.'

Initially, 'collective' meant 'gathered together,' but over time it evolved to mean 'pertaining to a group.'