We don't have synonyms for sordes yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are hordes, sores and sortes.
(n) :
deposits of dirt or bacteria on the body, discharges; bacterial deposits on the teeth; a small pterosaur that lived in the late Jurassic Period of the Mesozoic era
"1973: Fresh sheets, sponging, a spoonful of animal soup, sordes removed from his cracked lips, black in the candlelight. -- Patrick O'Brian, HMS Surprise"
(n) :
deposits of dirt or bacteria on the body, discharges; bacterial deposits on the teeth; a small pterosaur that lived in the late Jurassic Period of the Mesozoic era
"1973: Fresh sheets, sponging, a spoonful of animal soup, sordes removed from his cracked lips, black in the candlelight. -- Patrick O'Brian, HMS Surprise"