0 Scummy water or another liquid is covered with a layer of an unpleasant substance:
a scummy pool
1 unpleasant and dirty or in bad condition:
a scummy way to treat someone
Oxygen levels can plunge, killing fish and making the water smelly and scummy.
Children should especially be kept from entering scummy water since they are more likely than adults to ingest the water.
The toothbrush sits in a scummy holder on a dirty bathroom countertop.
Old scummy goggles are not proper protection.
