vĕhĕmentesco — Lewis & Short
vĕhĕmentesco, ĕre,
I v. inch. n. [id.], to become violent or vehement (late Lat.):
passio,Cael. Aur. Tard. 1, 2, 51; 2, 6, 92:
fluor,id. ib. 4, 6, 91.