[ lib-er-tair-ee-uh n ]
/ ˌlɪb ərˈtɛər i ən /


a person who advocates liberty, especially with regard to thought or conduct.
a person who maintains the doctrine of free will (distinguished from necessitarian).


advocating liberty or conforming to principles of liberty.
maintaining the doctrine of free will.

Origin of libertarian

First recorded in 1780–90; libert(y) + -arian

Related forms

lib·er·tar·i·an·ism, nounan·ti·lib·er·tar·i·an, adjective, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for libertarian

British Dictionary definitions for libertarian


/ (ˌlɪbəˈtɛərɪən) /


a believer in freedom of thought, expression, etc
philosophy a believer in the doctrine of free willCompare determinism


of, relating to, or characteristic of a libertarian

Derived Forms

libertarianism, noun

Word Origin for libertarian

C18: from liberty
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012