English

Definition of redouble verb from the Oxford Advanced Learner's Dictionary

 

redouble

 verb
verb
BrE BrE//ˌriːˈdʌbl//
 
; NAmE NAmE//ˌriːˈdʌbl//
 
Verb Forms present simple I / you / we / they redouble
BrE BrE//ˌriːˈdʌbl//
 
; NAmE NAmE//ˌriːˈdʌbl//
 
he / she / it redoubles
BrE BrE//ˌriːˈdʌblz//
 
; NAmE NAmE//ˌriːˈdʌblz//
 
past simple redoubled
BrE BrE//ˌriːˈdʌbld//
 
; NAmE NAmE//ˌriːˈdʌbld//
 
past participle redoubled
BrE BrE//ˌriːˈdʌbld//
 
; NAmE NAmE//ˌriːˈdʌbld//
 
-ing form redoubling
BrE BrE//ˌriːˈdʌblɪŋ//
 
; NAmE NAmE//ˌriːˈdʌblɪŋ//
 
 
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redouble something to increase something or make it stronger The leading banks are expected to redouble their efforts to keep the value of the dollar down. redoubled enthusiasm Their doubts were redoubled by this news. Word Origin late Middle English: from French redoubler, from re- ‘again’ + doubler ‘to double’.
See the Oxford Advanced American Dictionary entry: redouble