IPA: /mɪˈlɪtənsi/
KK: /mɪˈlɪtənsi/
The state or quality of being aggressive or combative, often in support of a cause or belief.
The group's militancy was evident in their protests and demonstrations.
Militancy is formed from "militare" (meaning to serve as a soldier) and the suffix "-ancy" (indicating a state or quality). The word refers to the state or quality of being militant, often implying a readiness to engage in conflict or warfare.
Think of 'militare' which relates to soldiers, and remember that 'militancy' describes the state of being ready to fight or engage in conflict.