A free market (or free-trade) economy is an idealized form of market economy in which buyers and sellers are permitted to carry out transactions solely based on mutual agreement on price without government intervention in the form of taxes, subsidies, regulation, or government ownership of goods or services (except that the government protects property rights and enforces contracts).
Additional meaning of Free market:
The free market is considered the mainstay of ideologies such as minarchism, libertarianism, and 19th century liberalism, along with Western definitions of capitalism. It is anathema to communism and some variants of socialism, as defined in the West, although modern liberalism and most variants of socialism seek to mitigate what they see as the problems of an unrestrained free market.