dē-fervĕo, ēre,
I v. n., to boil thoroughly; of wine, to ferment completely , Plin. 14, 9, 11, § 85; of lime and water, to effervesce , Vitr. 7, 2, 1.—
II Trop., to subside : indignatio, Vulg. Esth. 2, 1.