1) Abject 2) Contemptible 3) Covered with scum 4) Like a filthy bathtub 5) Low-down 6) Miserable 7) Not really respectable 8) Of the most contemptible kind 9) Scurvy 1) Abject 2) Contemptible 3) Dirty 4) Scurvy 5) Soiled 6) Unclean 
• (a.) Covered with scum; of the nature of scum.
Scum'my adjective Covered with scum; of the nature of scum. Sir P. Sidney. 
[adj] - covered with scum
adjective covered with scum; `the scummy surface of the polluted pond`