fourfold

adjective

four·​fold ˈfȯr-ˌfōld  -ˈfōld 

1

: being four times as great or as many

2

: having four units or members

fourfold

ˈfȯr-ˈfōld 

adverb

Examples of fourfold in a Sentence

There has been a fourfold increase in membership this year.

Recent Examples on the Web

Unemployment rose as remote work grew fourfold, the researchers write. — Andrea Hsu, NPR, 1 June 2026

That represented more than a fourfold increase from the 70 cases in 2021. — Sacbee.com, 22 June 2026

Expanding output from 5,000 to 10,000 units took only three months, representing more than a fourfold increase in production speed compared with the previous phase. — Jijo Malayil, Interesting Engineering, 29 June 2026

At last year’s COP30 climate summit, major producers sought to reignite the sector, announcing the Belém 4x Pledge to increase bioenergy and biofuel use fourfold over the next decade. — Nithin Coca, semafor.com, 23 Apr. 2026

Word History

Etymology

Middle English, from Old English fēowerfeald, from fēower + -feald -fold

First Known Use

before the 12th century, in the meaning defined at sense 1

Rhymes for fourfold

• ahold
• behold
• billfold
• blindfold
• cajoled
• consoled
• controlled
• cotswold
• eightfold
• enfold
• enrolled
• extolled

Kids Definition

fourfold

adjective

four·​fold -ˌfōld 

-ˈfōld

: being four times as great or as many