Main Entry: re·dou·ble

Pronunciation: \(ˌ)rē-ˈdə-bəl\

Function: verb

Date: 15th century

transitive verb

1 : to make twice as great in size or amount; broadly : intensify, strengthen
2 a obsolete : to echo back b archaic : repeatintransitive verb 1 : to become redoubled
2 archaic : resound
3 : to double an opponent's double in bridge

— redouble noun