scum

Definitions

A layer of foul or extraneous matter that forms on the surface of a liquid.

A derogatory term for a person or group of people considered to be worthless or contemptible.

Examples

The pond was covered in a thick layer of green scum.

He called the criminals who stole from the elderly absolute scum.

After the oil spill, the surface of the water was coated in a greasy scum.

Synonyms

dregs riffraff trash scoundrels vermin outcasts rabble

Antonyms

elite nobility aristocracy gentlemen pillars honorable virtuous