redouble

verb

re·​dou·​ble (ˌ)rē-ˈdə-bəl 

redoubled; redoubling; redoubles

transitive verb

1

: to make twice as great in size or amount

broadly : intensify, strengthen

2

a

obsolete : to echo back

b

archaic : repeat

intransitive verb

1

: to become redoubled

2

archaic : resound

3

: to double an opponent's double in bridge

redouble noun

Synonyms

• accentuate
• amp (up)
• amplify
• beef (up)
• boost
• consolidate
• deepen
• enhance
• heighten
• intensify
• magnify
• step up
• strengthen

Examples of redouble in a Sentence

They redoubled their efforts to finish the work on time.

Their efforts to finish the work redoubled as the deadline drew near.

Recent Examples on the Web

Urban planners and stakeholders must redouble their efforts to embed sustainability and resilience into infrastructure planning over the coming decades, as more of humankind opts to live in cities, according to industry experts participating in a global summit in Abu Dhabi. —Gaurav Sharma, Forbes.com, 18 June 2025

Poland and Finland have redoubled their support, and the latter joined NATO in 2023 after decades of neutral dithering. —Graeme Wood, The Atlantic, 7 May 2025

Now Tools for Humanity is redoubling its efforts there. —Billy Perrigo, Time, 27 May 2025

There were tearful videos where creators prayed for Trigg’s wellbeing and others where people redoubled their investigative efforts to prove that Trigg was the boy who had drowned. —Fortesa Latifi, Rolling Stone, 21 May 2025

Word History

First Known Use

15th century, in the meaning defined at transitive sense 1

Rhymes for redouble

• bubble
• double
• rubble
• stubble
• trouble

Kids Definition

redouble

verb

re·​dou·​ble (ˈ)rē-ˈdəb-əl 

: to make or become doubled (as in size or amount)

redoubled their efforts