libertarian (n.)youdaoicibaDictYouDict[libertarian 词源字典]
1789, "one who holds the doctrine of free will" (opposed to necessitarian), from liberty (q.v.) on model of unitarian, etc. Political sense of "person advocating liberty in thought and conduct" is from 1878. As an adjective by 1882. U.S. Libertarian Party founded in Colorado, 1971.[libertarian etymology, libertarian origin, 英语词源]