militant
UK: ˈmɪlɪtənt | US: ˈmɪlɪtənt
adj. aggressively active or combative, especially in support of a cause
n. a person who is militant, especially in politics or warfare
The word "militant" traces back to Latin militare ("to serve as a soldier"), derived from miles ("soldier"). Over time, it evolved in English to describe not just literal soldiers but anyone aggressively engaged in a struggle, often for ideological or political causes. The suffix "-ant" reinforces the active, combative nature of the subject.
The militant group staged protests across the city.
She adopted a militant stance on environmental issues.
His militant attitude often alienated potential allies.
The union became more militant in its demands for higher wages.
Historically, militant movements have driven significant social change.