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v. Simple past tense and past participle of redouble.

adj. become much greater in intensity or size or amount

"She received her with pleasure and gladness and seeing her in redoubled beauty and brilliancy rejoiced in her with exceeding joy, saying, “O my daughter, my heart was troubled about thee and in my uneasiness I offended against this my sister the Koranist with a speech that wounded her.”"

redoubled    redoubles    redoubling   

deepen    intensify    escalate    step-up    duplicate    double   

redoubled interval   

multiply    double   

Hubble    bubble    double    rubble    stubble    trouble