oblīvĭōsus — Lewis & Short
oblīvĭōsus, a, um, adj.oblivio.
I Lit., that easily forgets, forgetful, oblivious (rare but class.):
hos (senes) significat credulos, obliviosos,Cic. Sen. 11, 36.—Sup.:
homo obliviosissimus,Tert. Anim. 24.—
II Transf., that produces forgetfulness, oblivious (poet.):
Massicus (i. e. sollicitudinum oblivionem afferens),Hor. C. 2, 7, 21.