Lewis & Short

aegresco, ĕre, 3, v. inch. n. [aegreo], to become ill, to grow sick (not in Cic.).

  1. I. Lit.: morbis aegrescimus ĭsdem, * Lucr. 5, 349: aegrescunt corvi, Plin. 10, 12, 15, § 32.
  2. II. Fig.
    1. A. 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.
    2. B. 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.