Lewis Short
ag-grăvesco (adg-), ĕre, 3
* V. inch., to become heavy.
* Lit.: propinquitate parti, Pac. ap. Non. 486, 5 (Trag. Rel. p. 85 Rib.).
* Fig., of sickness, to become violent, severe, dangerous: ne Philumenae magis morbus adgravescat,grow worse, be aggravated,Ter. Hec. 3, 2, 2.
Charlton T. Lewis, Charles Short, A Latin Dictionary