verb (used with object), re·dou·bled, re·dou·bling.
verb (used without object), re·dou·bled, re·dou·bling.
Related formsre·dou·bler, noun
Can be confusedredouble reduplicate
Examples from the Web for redouble
NBC was right to clarify its policies and redouble its efforts to make sure they are followed.Planned Parenthood: Why NBC's Abortion Ad Snafu Matters|Eric Ferrero|June 25, 2014|DAILY BEAST
Fourth, international efforts in support of a peace process must redouble.
“Now we will redouble our efforts as more Afghans rally to our cause to fight the remaining invaders,” he adds.Taliban Slams Loya Jirga Bilateral Security Agreement|Ron Moreau & Sami Yousafzai|November 26, 2013|DAILY BEAST
As we stand united with their families, let us now redouble our own efforts to carry their work forward.Attacks on American Consulate in Libya kill four, including American Ambassador|Justin Green|September 12, 2012|DAILY BEAST
These changes at home initially make him redouble the repression of his family.Cairo, Revisited: How Naguib Mahfouz Predicted the Future of Egypt|Joel Whitney|July 22, 2012|DAILY BEAST
But more especially when he is about to change his dwelling, does he redouble his care and his attention.Animal Parasites and Messmates|P. J. Van Beneden
If they know she sees and appreciates their efforts, they will redouble them.Lessons on Manners|Edith E. Wiggin
Laura's heart seemed to pause for a moment, and then to redouble its beating.Self-control|Mary Brunton
The unknown made no reply, and appeared to redouble their speed.The Tiger-Slayer|Gustave Aimard
Yet every observation that she could make tended to redouble its keenness.The Wanderer (Volume 1 of 5)|Fanny Burney