libertarian

The noun is derived from liber(ty) + -arian (suffix denoting an advocate of or believer in something). The adjective is derived from the noun. sense development The word was first attested in English in 1789 in William Belsham’s Essays: see the quotation. This was contrasted with necessitarian, in the context of free will, and was not used in the more frequently encountered modern sense. Compare French libertaire (“person with extreme left-wing beliefs, anarchist”), from liberté (“freedom”) + -aire (suffix forming nouns). Libertaire is derived from Latin libertas.

出典: Wiktionary「libertarian」（CC BY-SA 4.0）