Wiktionary:Word of the day/2024/August 8

1. One who advocates liberty, either generally or in relation to a specific issue.
2. (philosophy) A believer in the freedom of thinking beings to choose their own destiny (the doctrine of free will) as opposed to those who believe the future is predetermined (the doctrine of necessity).
3. (politics) One who advocates libertarianism (“a political philosophy maintaining that all persons are the absolute owners of their own lives, and should be free to do whatever they wish with their persons or property, provided they allow others that same liberty”); also, a member of a political party supporting libertarianism.
   1. (chiefly Ireland, UK) An antiauthoritarian believer in left-libertarianism, a political doctrine that stresses both individual freedom and social equality, and advocates shared ownership of natural resources.
   2. (chiefly US) A believer in right-libertarianism, a political doctrine that emphasizes individual liberty and a lack of governmental intervention, oversight, and regulation, both in economic matters (that is, a belief in the free market) and in personal behaviour provided that no one's rights are threatened or violated.

libertarian adj

1. Advocating liberty; also, having a relative tendency towards liberty.
2. (philosophy) Relating to the doctrine of free will as opposed to the doctrine of necessity.
3. (originally US, politics) Relating to, or advocating, libertarianism; also, relating to a political party supporting libertarianism.