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
Once the dog's tracks led aside to a scummy puddle, saucered by alkali, dotted with the spoor of desert animals that drank the bitter water in extremity.
He found his stream, a thread of water, hardly more than a series of scummy pools with the vegetation still meeting almost solidly over it.
Then again that requires you to want to know the truth, as opposed to wanting to learn more talking points to slam those scummy libruls with.
And people will think you're scummy.
We can practically feel the slightly scummy texture of the interior surface of the jar.
I am also the person who cleanes the scummy microwave and the utensils left in the sink.
That's not high-tech jargon for, say, a scummy site that steals private data off of your social networks and sells it to marketers.
After all, "pubescent" does not equal "mentally mature," and "is scummy" and "should be locked up" are not mutually exclusive concepts.