REDOUBLE, verb transitive redub'l. [re and double.] 1. To repeat in return. 2. To repeat often; as, to redouble blows. 3. To increase by repeated or continued additions. And AEtna rages with redoubl'd heat. REDOUBLE, verb intransitive redub'l. To become twice as much. The argument redoubles upon us.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI