ag-grăvesco — Lewis & Short
ag-grăvesco (adg-), ĕre, 3,
I v. inch., to become heavy.
I Lit.: propinquitate parti, Pac. ap. Non. 486, 5 (Trag. Rel. p. 85 Rib.).—
II Fig., of sickness, to become violent, severe, dangerous:
ne Philumenae magis morbus adgravescat,grow worse, be aggravated, Ter. Hec. 3, 2, 2.