quadruple
v. B2 Upper Intermediate US //kwɑˈdɹupəɫ// quadru·ple
v. to increase or grow until it is four times as big as it was before.
v. to increase fourfold in size, amount, or degree. Often used to describe rapid growth in financial or statistical contexts.
The company hopes to quadruple its profits this year.
After the new marketing campaign launched, the number of daily visitors to the website began to quadruple within months.
Economists predict that if current trends in urban migration continue, the population of the coastal city could quadruple by the end of the century, straining local infrastructure.
From Middle English quadruple, from Latin quadruplus. Can be analyzed as quadri- + -ple.
Usage
The verb can be used transitively with a direct object or intransitively to describe a subject's growth.