Lewis & Short

ob-sordesco, dŭi, 3, v. inch. n., to become dirty, be soiled (ante- and post-class.).

  1. I. Lit.: ne coma fumo obsordescat, Prud. Apoth. 214.
  2. II. Trop., to wear out, decrease: obsorduit jam haec in me aerumna, i. e. is moderated, Caecil. ap. Non. 147, 7 (Com. Rel. v. 86 Rib.).