Lewis & Short

dē -saevĭo, ĭi (the pluperfect subj. contr. desaevisset, Suet. Ner. 29), 4, v. n.

  1. I. To rave furiously, to rage (not anteAug., and very rare): toto Aeneas desaevit in aequore, Verg. A. 10, 569: pelago hiems, id. ib. 4, 52: omnes in artus, Luc. 6, 540; cf. Suet. Ner. 29: tragica in arte, * Hor. Ep. 1, 3, 14: belli Punici procella, Flor. 2, 6, 12: ira tua desaeviet, Vulg. Num. 16, 22.
  2. * II. To cease raving or raging: nec dum desaeviat ira, Exspectat, Luc. 5, 304.