The word "re-doubles" refers to increasing or intensifying something, but its antonyms are words that indicate decreasing, diminishing or reducing. Some antonyms for "re-doubles" include "lessens," "dampens," "weakens," "subtracts," "cuts back," or "reduces." These words convey the opposite meaning and actions to "re-doubles" and could be used in various contexts. For instance, instead of saying that a company re-doubles its marketing efforts, one can say that it reduces its expenses to cut back on the losses. Antonyms are useful in writing to add variety, precision, and clarity to the language. They make communication more effective by conveying distinct messages.