Lewis Short
sordesco, dŭi, 3
* V. inch. n. [sordeo], to become dirty, grow filthy (not ante-Aug., and very rare): contrectatus ubi manibus sordescere vulgi Coeperis (liber), * Hor. Ep 1, 20, 11: mel,Plin. 11, 12, 12, § 31: manus,id. 33, 3, 19, § 60: ager,i. e. to become wild, lie untilled,Gell. 4, 12, 1.
* Trop., to be mean, vile, Amm. 15, 13, 2.
Charlton T. Lewis, Charles Short, A Latin Dictionary