the GNU version of the Collaborative International Dictionary of English
adj. Covered with scum; of the nature of scum.
The Century Dictionary and Cyclopedia
Covered with scum.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. covered with scum
adj. of the most contemptible kind
Word Usage
"That is what I call a scummy estate: filthy, evidence of drugs use everywhere, constant reminders of threat of crime, the sort of place taxis won't pick up from."