campaigner
UK: /kæmˈpeɪnə/ | US: /kæmˈpeɪnər/
n. a person who actively supports or works for a cause, especially in politics or social reform
n. a participant in a military campaign
campaigner = campaign<series of organized actions> + er<agent noun suffix>
- campaign: From French campagne (open country, military operation), derived from Italian campagna (field, military expedition), ultimately from Latin campania (level country), from campus (field).
- er: A suffix denoting a person associated with an action or role (e.g., "teacher," "runner").
Etymology Origin:
The word traces back to Latin campus (field), reflecting its military origins—early "campaigns" were large-scale military operations conducted in open fields. By the 17th century, it expanded metaphorically to organized efforts in politics or social causes. The suffix -er simply denotes someone engaged in such efforts.
She was a tireless campaigner for women's rights.
The veteran served as a campaigner in three wars.
Environmental campaigners protested outside the oil company's headquarters.
He became a prominent campaigner after his son was affected by the disease.
The political campaigner delivered speeches across the state.