say it: ree-DUHB-uhl
redouble is a verb meaning "double in magnitude, extent, or intensity". It carries 3 recorded senses.
double in magnitude, extent, or intensity
“The enemy redoubled their screaming on the radio”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for redouble come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.