proliferate

1. (ambitransitive) To increase in number or spread rapidly; to multiply.Examples: "The flowers proliferated rapidly all spring."; "When no certain cure exists, quack remedies tend to proliferate and the history of quackery and secret cures is full of extraordinary forms of treatment for the various arthritic disorders."; "But through the oligopoly, charcoal fuel proliferated throughout London's trades and industries. By the 1200s, brewers and bakers, tilemakers, glassblowers, pottery producers, and a range of other craftsmen all became hour-to-hour consumers of charcoal."ambitransitive