redouble
Americanverb (used with object)
-
redoubles,
present (3rd person singular)
-
redoubled,
past participle, past
-
redoubling
present participle
-
to double; make twice as great.
If you hope to win that client, you'll have to redouble your efforts to impress her.
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to echo or reecho.
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Bridge. to double the double of (an opponent).
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to go back over.
I redoubled my footsteps, trying to find my lost earring.
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Archaic. to repeat.
verb (used without object)
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redoubles,
present (3rd person singular)
-
redoubled,
past participle, past
-
redoubling
present participle
-
to be doubled; become twice as great.
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to be echoed; resound.
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Bridge. to double the double of an opponent.
noun
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Bridge. the act of doubling one's opponent's double.
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Fencing. an attack in a line other than that of the previous attack, made after the failure of the opponent to follow their parry of the previous attack with a riposte.
verb
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to make or become much greater in intensity, number, etc
to redouble one's efforts
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to send back (sounds) or (of sounds) to be sent back; echo or re-echo
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bridge to double (an opponent's double)
noun
Other Word Forms
Derived Forms
Inflected Forms
Participles
Conjugated Forms
Present
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redoublesimple
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redoublessimple
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have redoubledperfect
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has redoubledperfect
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am redoublingprogressive
-
are redoublingprogressive
-
is redoublingprogressive
-
have been redoublingperfect progressive
-
has been redoublingperfect progressive
Past
-
redoubledsimple
-
had redoubledperfect
-
was redoublingprogressive
-
were redoublingprogressive
-
had been redoublingperfect progressive
Future
Etymology
Origin of redouble
From the Middle French word redoubler, dating back to 1470–80. See re-, double
Explanation
To redouble something is to intensify it or make it bigger. After losing your initial run for school president, you might redouble your efforts the next year, with a bigger and better campaign. You'll almost always find the verb redouble accompanied by efforts, as when the local police force makes a pledge to redouble their efforts to cut down on people texting while driving. Or in an attempt to have a more diverse student body, a college might redouble its efforts to recruit applicants from different geographical areas. The root of redouble is the Middle French word redoubler, which combines re, "again," and doubler, "to double."
Vocabulary lists containing redouble
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
We need to redouble our efforts to keep those markets growing.
From Barron's ● Jan. 26, 2026
He said Canadians must redouble their efforts to rebuild their economy, and drew on the country’s founding, when the British and French joined to choose “partnership over domination, and collaboration over division.”
From The Wall Street Journal ● Jan. 23, 2026
The organization emailed its millions of followers on Sunday, urging them to redouble their planned menorah lightings.
From Los Angeles Times ● Dec. 14, 2025
Those arguing that gold will double and then redouble from here would extend the line on this chart straight up.
From MarketWatch ● Oct. 14, 2025
I went back out there rested, focused, and determined to redouble my efforts.
From "Ugly" by Robert Hoge
When the tankers flow through the Strait again, or if the UAE redoubles its attempts to build new pipelines, Emirati oil will flow like never before, unconstrained by Opec commitments.
From BBC ● Apr. 28, 2026
But it is also frustrating, and rereading redoubles that frustration.
From The Wall Street Journal ● Mar. 20, 2026
It could be, for example, that as a fund manager becomes aware that his trades are predictable, he redoubles his efforts to make his trades less predictable—which, in turn, should improve his performance.
From Barron's ● Mar. 3, 2026
But rather than a distraction, it redoubles the impact.
From Los Angeles Times ● Nov. 21, 2025
"I will take some, my son, for my seasickness takes the form of a robust appetite; once on shipboard, my hunger redoubles."
From A Romance of the West Indies by Eugène Sue
Hasbro has redoubled efforts to meet the $9.99 price point, working with designers and suppliers to cut product-packaging costs, Cocks said.
From The Wall Street Journal ● Jul. 14, 2026
But Canberra has redoubled efforts to diversify export markets for farmers since a 2020 dispute with Beijing saw agriculture exports blocked for several years, and then last year's global imposition of US trade tariffs.
From Barron's ● Mar. 23, 2026
After that defeat, they redoubled their efforts to organize within the region’s abandoned communities.
From Salon ● Jul. 21, 2025
This week, Sir Keir Starmer and his ministers redoubled their efforts to win over Labour MPs minded to join what could be the biggest rebellion yet against his government.
From BBC ● May 23, 2025
Her nausea returned with redoubled violence when she remembered the scene in the courthouse, but she had nothing left to part with.
From "Go Set a Watchman: A Novel" by Harper Lee
Two of the company’s main rivals, LG and Samsung, are redoubling their efforts on the continent after falling short in China, said Troy Stangarone, visiting senior fellow at the Korea Economic Institute of America.
From The Wall Street Journal ● Aug. 4, 2026
Countries are redoubling efforts to build alternative payment infrastructure.
From Barron's ● May 27, 2026
"This year, his illness makes us especially grateful to God,… redoubling our prayers for his full recovery," the Cardinal said.
From BBC ● Mar. 12, 2025
But in recent years, amid mounting alarm over its plummeting fertility rates, South Korea has been redoubling its decades-long efforts — such as ethnic identity-building campaigns and employment programs — to bring them back.
From Los Angeles Times ● Oct. 17, 2024
She reacted as she always did to adversity: by redoubling her efforts to force change on the reluctant city.
From "The Best of Enemies" by Osha Gray Davidson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
