re·​dou·​ble | \ (ˌ)rē-ˈdə-bəl How to pronounce redouble (audio) \
redoubled; redoubling; redoubles

Definition of redouble

transitive verb

1 : to make twice as great in size or amount broadly : intensify, strengthen
2a 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

Keep scrolling for more

Other Words from redouble

redouble noun

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

Environmental advocates said the study, which included researchers from Harvard University, was a reminder that states and utilities must redouble their efforts to repair leaks. Globe Staff,, "A primer on methane (and cow flatulence)," 1 Aug. 2019 Trump made immigration the centerpiece of his 2016 campaign and has redoubled the message in his reëlection bid. Jonathan Blitzer, The New Yorker, "The Democrats’ Immigration Problem Is Bigger Than Donald Trump," 25 July 2019 Some global auto makers have responded to the slump by redoubling their commitment to China. Trefor Moss, WSJ, "No Turnaround in Sight for China Car Sales," 10 July 2019 By redoubling investment in the technologies of a brand new industry, Canada can position itself to keep riding the wave as legalization spreads around the globe. Shafin Diamond Tejani, Quartz, "What Mark Twain can teach us about the weed industry," 29 June 2019 Fairfax vehemently denied the accusations in the wake of the interviews and redoubled his calls for law enforcement investigations. Ed O'keefe, CBS News, "Virginia Lt. Gov. Justin Fairfax calls for criminal investigation into sexual assault allegations against him," 13 June 2019 The only plain surfaces are those of the mirrors, which serve to reflect and redouble the rest. Bruce Dale, National Geographic, "Adored, neglected, and restored: A 1968 Nat Geo feature explored Notre Dame," 17 Apr. 2019 But Epic’s redoubling its efforts next week, giving away both Moonlighter and This War of Mine. Hayden Dingman, PCWorld, "This week in games: A Cities: Skylines com-poo-ter, a new story for PUBG, and a new Valve game," 19 July 2019 The time is now — at the G20 — to redouble efforts to reach a strong, enforceable deal. Myron Brilliant For Cnn Business Perspectives, CNN, "The trade deal Trump and Xi should agree on at G20," 28 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'redouble.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of redouble

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

Keep scrolling for more

Learn More about redouble

Statistics for redouble

Last Updated

7 Aug 2019

Look-up Popularity

Time Traveler for redouble

The first known use of redouble was in the 15th century

See more words from the same century

Keep scrolling for more

More Definitions for redouble



English Language Learners Definition of redouble

: to greatly increase the size or amount of (something)


re·​dou·​ble | \ rē-ˈdə-bəl How to pronounce redouble (audio) \
redoubled; redoubling

Kids Definition of redouble

: to greatly increase the size or amount of They redoubled their efforts.

Keep scrolling for more

More from Merriam-Webster on redouble

Rhyming Dictionary: Words that rhyme with redouble

Thesaurus: All synonyms and antonyms for redouble

Spanish Central: Translation of redouble

Nglish: Translation of redouble for Spanish Speakers

Britannica English: Translation of redouble for Arabic Speakers

Comments on redouble

What made you want to look up redouble? Please tell us where you read or heard it (including the quote, if possible).


a period when something is suspended

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!