ef-frēnus
a, um, adj.
I.
free from the bridle, unbridled (not ante Aug., and mostly poet. for effrenatus; cf. also: infrenus, infrenatus).
I.
Lit.: equus, Liv. 4, 33, 7.—
II.
Trop., unbridled, unrestrained: gens, Verg. G. 3, 382: amor, Ov. M. 6, 465: juventa, Stat. Achill. 1, 277: profatu, id. Silv. 5, 3, 103.