What is the opposite of pure competition?

The opposite of pure competition is monopoly. In a monopoly, a single seller dominates the market, controlling prices and supply without competition. Unlike pure competition, where many firms offer identical products and no single firm can influence market prices, a monopolistic market can lead to higher prices and reduced choices for consumers. Other forms of market structures, such as oligopoly and monopolistic competition, also differ from pure competition but do not have the same level of market control as a monopoly.