trade that is in violation of restrictions, rationing, or price controls / the people who engage in such trade (considered as a group), or that sector of the economy

(economics) Any market in which trade is unregulated by government; an economic system free from government intervention.

Any market in which carbon emissions trading takes place.

Of, related to or characteristic of a free market. Lacking wealth redistribution and government regulation.

Misspelling of farmers' market.

(Britain, dated) someone who was opposed to Britain joining the "Common Market" (European Union)

(business) The buying and selling of goods through distribution channels other than those authorized or intended by the manufacturer or producer.

(finance) A market for trading short-term debt instruments, such as treasury bills, commercial paper, bankers' acceptances, and certificates of deposit.

(idiomatic) something which is overabundant at the moment and thus not in demand.

A form of social organization where individuals are free to trade for any commodity, including those usually reserved for the state.