black market

Ca. 1930, probably a calque of German Schwarzmarkt, which is attested from the 1910s. Compare Schwärzer (“smuggler”, 18th c.).

• "Peace and order will not be tolerated. Start saving your cash for the black market, folks, you're gonna need it."
• "In District 12, a dirt-poor coal-mining community that looks like a Dorothea Lange photograph, Katniss Everdeen (Jennifer Lawrence) quietly rebels against the system by hunting game in a forbidden area with her friend Gale (Liam Hemsworth) and trading it on the black market."
• "Increasing numbers of people are turning to a growing black market for food to supplement their diets as prices rocket, experts have said."

• black economy