monopoly (n.)

"exclusive control of a commodity or trade," 1530s, from Latin monopolium, from Greek monopolion "right of exclusive sale," from monos "single, alone" (from PIE root *men- (4) "small, isolated") + polein "to sell," from PIE root *pel- (4) "to sell."

Alternative form monopole (1540s, from the Old French form of the word) was common in 16c. The popular board game, invented by Charles Darrow, is from 1935. Monopoly money "unreal currency" is attested from 1972, in reference to the paper used in the game.

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