Lewis & Short

oblīvĭum, ii, n. [obliviscor], forgetfulness, oblivion (poet. and once in Tac. for oblivio; usually in the plur.): oblivia rerum, Lucr. 3, 828; so id. 3, 1066; 6, 1213: longa oblivia potant, Verg. A. 6, 715: ducere sollicitae jucunda oblivia vitae, Hor. S. 2, 6, 62: taedae, Sil. 2, 628: agere oblivia laudis, to forget, Ov. M. 12, 539: suci, qui patriae faciant oblivia, id. P. 4, 10, 19.
In sing.. sententiam oblivio transmittere, Tac. H. 4, 9, Ambros. Apol. Dav. 31, 16.