Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “scum”

scum

noun
 
 
/skʌm/
SUBSTANCE [U, no plural] an unpleasant, thick substance on the surface of a liquid: There was a thick layer of scum on the water.Coverings and layers
PERSON [U] informal an offensive way of referring to a very bad personUnpleasant people in generalUnpleasant men
(Definition of scum from the Cambridge Learners Dictionary © Cambridge University Press)
Add Cambridge dictionaries to your browser to your website

Definitions of “scum” in other dictionaries

Word of the Day

bitter

a type of dark brown beer with a bitter taste

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More