Lewis Short
aegresco, ĕre, 3
* V. inch. n. [aegreo], to become ill, to grow sick (not in Cic.).
* Lit.: morbis aegrescimus ĭsdem, * Lucr. 5, 349: aegrescunt corvi,Plin. 10, 12, 15, § 32.
* Fig.
* To grow worse: violentia Turni exsuperat magis, aegrescitque (i. e. asperior fit) medendo, * Verg. A. 12, 45: in corde sedens aegrescit cura parentis,Stat. Th. 1, 400.
* To be troubled, anxious, afflicted, grieved: rebus laetis,Stat. Th. 2, 18: his anxia mentem Aegrescit curis (mentem, Gr. acc.), id. ib. 12, 193: sollicitudine,Tac. A. 15, 25 fin.
Charlton T. Lewis, Charles Short, A Latin Dictionary