obsolete Copy link Outline 1. obsŏlētus2. exsŏlētus (exoletus)3. pervĕtustus (antiquated)4. expr. by circuml. • obsolete: 1. obsŏlētus: o. words, verba obs., Cic. de Or. 3, 37, 150. 2. exsŏlētus (exoletus): o. and out of the way words, ex. et reconditae voces, Suet. Aug. 86: an o. custom, ex. mos, id. Gal. 4. 3. pervĕtustus (antiquated): Cic. de Or. 3, 52, fin. (of words). 4. expr. by circuml.: o. words, verba prisca ac vetusta et ab usu quotidiani sermonis jamdiu intermissa, Cic. de Or. 3, 37, 153. Phr.: o. laws, leges antiquae et mortuae, Cic. Verr. 5, 18, 45. To become o.: (1). obsŏlesco, ēvi, ētum, 3: Varr. L. L. 9, 10, 16. (2). exŏlesco, 3: to prevent the institution becoming o., ne disciplina exolesceret, Tac. A. 11, 15. (3). poet. cădo, cĕcĭdi, cāsum, 3: Hor. A. P. 70.