extremist

The word 'extremist' is a modern construction built upon the classical Latin foundation of extremus, meaning "outermost" or "utmost," which itself derives from exter (outside). The suffix -ist, of Greek origin via Latin, was productively attached to nouns to indicate a follower or specialist. Thus, the term's literal logic is "a person associated with the outermost point." This evolved from a neutral sense of occupying the farthest position to the modern abstract meaning of advocating the most radical, often fanatical, views or actions, situated at the far end of a political or ideological spectrum.

Structure: extrem (utmost) + ist (person who advocates) - extrem: From Latin extremus (outermost, utmost, last), the superlative of exter (outer). Functions as the core adjective root. - ist: From Greek -istēs (agent noun suffix), via Latin -ista. Functions as a noun-forming suffix denoting a person who practices or is concerned with something.