Simple Definition of scum
: a layer of something unpleasant or unwanted that forms on top of a liquid
: a dishonest, unkind, or unpleasant person
Full Definition of scum
Examples of scum
Boil the chicken and use a spoon to remove any scum that floats to the surface.
<claimed that only scum lived in that part of town>
Origin of scum
Middle English, from Middle Dutch schum; akin to Old High German scūm foam
First Known Use: 14th century
Definition of scum
: to become covered with or as if with scum
First Known Use of scum
Seen and Heard
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