libertarian
noun
[ ˌlɪbəˈtɛːrɪən ]
• an advocate or supporter of a political philosophy that advocates only minimal state intervention in the free market and the private lives of citizens.
• "no true libertarian would ever support a culture where citizens must show their papers to travel"
• a person who advocates civil liberty.
• a person who believes in the doctrine that human beings possess free will.
libertarian
adjective
• relating to or denoting a political philosophy that advocates only minimal state intervention in the free market and the private lives of citizens.
• "he holds libertarian views on most social issues"
Origin:
late 18th century (in libertarian (sense 3 of the noun)): from liberty, on the pattern of words such as unitarian .