'campaigner' originates from the word 'campaign,' which comes from the French word 'campagne,' meaning 'open field' or 'military operation.'

'campaign' evolved from the French word 'campagne' and was adopted into English in the 17th century to describe military operations, later extending to political and social movements.

Initially, it meant 'military operation,' but over time it evolved into its current meaning of 'organized effort to achieve a goal.'