Lewis Short
crūdesco, dŭi, 3
* V. inch. n. [crudus], to grow harsh or violent, to increase, grow worse (poet. and in post-Aug. prose; perh. not before Virg.): coepit crudescere morbus,Verg. G. 3, 504; so, pugnae,id. A. 7, 788: ferrum magicā linguā,Sil. 1, 431: irae,Stat. Th. 2, 680; cf.: crudescente irā,Just. 8, 4, 4: seditio,Tac. H. 3, 10: noxa,Symm. Ep. 8, 57.
Charlton T. Lewis, Charles Short, A Latin Dictionary