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

• intensify
• enhance
• deepen
• heighten
• 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

As previously mentioned, Real Madrid has redoubled its efforts to overcome its archrival Barcelona. —Vitas Carosella, Forbes.com, 12 Aug. 2025

Instead, Swift has redoubled her efforts. —Paul Grein, Billboard, 12 Aug. 2025

There, Chase redoubled his commitment to expanding equality for women. —Anne Halsey, JSTOR Daily, 6 Aug. 2025

Iran has redoubled its effort since last month's Israel-Iran war, Barakzai says, using disinformation to label Afghans as Israeli spies to help its goal of removing thousands from the country. —Monika Evstatieva, NPR, 29 July 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