# quadruple

/kwɑˈdɹupəɫ/ (US) · CEFR B2 · Verb

Source: https://englishreference.com/word/quadruple
Updated: 2026-05-08

## Definition

to increase or grow until it is four times as big as it was before.

For teachers: to increase fourfold in size, amount, or degree. Often used to describe rapid growth in financial or statistical contexts.

## Examples

- 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.

## Usage notes

- The verb can be used transitively with a direct object or intransitively to describe a subject's growth.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.