Skip to main content
scum

scum

24 4.2
A dirty layer that floats on the surface of water
  • noun
  • /skʌm/
translation icon : espuma
  • Nothing like mold and scum floating to make me ill.
  • sludge and scum

Now sordido grime, right, kind of scum and, and things like that.

Autoplay Next

Examples

  • Left a scum residue everywhere but here.

  • I see no scum here.

  • In late summer, the pond would be covered by a green and bubbly scum.

    Fiction book (2001)
  • Stagnant yellow-green scum on the water eerily bubbled along the edge.

    Fiction book (1992)
  • With volcanoes smoking in the distance, brilliantly colored pools of greenish-brown scum created a sheen on the stench-filled water.

    Academic text (2007)
  • The surface of the pond was covered with a green layer of scum that made the water look dirty.

  • After the rain, scum formed on the top of the stagnant water, indicating it was contaminated.

  • You should always skim off any visible scum when boiling broth to keep it clear and clean.

Synonyms

skim
vsscum
23 6.6

A thin layer that forms on the top of a liquid

is broader covering foam dirt or algae on liquid surface
pond scum
vsscum
2 5.4

A green slippery layer of tiny plants that floats on the surface of still water

is broader applying to many types of surface deposits
offscouring
vsscum
  • Archaic
9.9

Dirt and waste removed when you clean something

is a formed layer on liquids rather than removed cleaning waste

Antonyms

30 2.7

How easy it is to see through something like clean water

25 3.1

The state of having no dirt or other things mixed in

Idioms

scum of the earth
  • Offensive
9 8.7

A cruel, dishonest person that many people hate

Compounds

2 5.4

A green slippery layer of tiny plants that floats on the surface of still water

scum bag
  • Offensive
1 8.9

A very bad person who treats other people cruelly

pond-scum parasite
  • Specialized
9.9

A small fungus that lives on and harms algae in ponds

How Thick

crust
91 1.1
slime
85 1.8
scum
24 4.2
film
191 3.2

Surface Forms

scum singular
scums plural

Etymology

Scum comes from an old word meaning 'foam' or 'froth', like the German Schaum. So scum originally named the thin dirty layer that forms on the surface of a liquid, which is why it now means that top layer of dirt or algae.