IPA: //ˈsuːpərˌmɪlɪtənt//
KK: /ˈsuːpərˌmɪlɪtənt/
A person who is extremely aggressive or active in promoting a cause, often using forceful or confrontational methods.
The supermilitant group organized protests to demand immediate action on climate change.
Supermilitant → It is formed from "super-" (meaning above or beyond) and "militant" (from Latin "militari", meaning to serve as a soldier). The word "supermilitant" describes someone who is extremely or excessively militant, going beyond the usual levels of aggression or activism.
Think of someone who is 'above' ('super-') the usual level of being a 'soldier' or activist ('militant') — that's why supermilitant means extremely aggressive or active in a cause.
No commonly confused words.