activist
Word family
Synonym discussion
Sense: noun/1
An 'activist' usually takes public action again and again to push for social or political change. A person may organize events, speak to the media, or build a movement. 'Campaigner' is very close, but it often points to organized work for one cause or one period of action, especially in British English. 'Advocate' is broader and calmer: an advocate may support change through writing, meetings, or law, without joining street protests. 'Protester' is narrower, naming someone at a particular demonstration. 'Reformer' focuses more on improving a system and can sound more official. Compare: 'A climate activist slept outside the mine gates for weeks', 'Parents campaigned against the fee rise', and 'Her lawyer advocates prison reform in court'.
Etymology
Built in English in the early 1900s from 'activism' and the suffix '-ist'. 'Activism' comes from 'active', which entered English through French from Latin roots linked to the idea of doing or driving action. So 'activist' was formed to name a person connected with active public efforts for change.