What does "scum" mean?
A layer of impurities that accumulates at the surface of a liquid (especially molten metal or water).
Scum
/skʌm/ name, noun, verb, slang
name, noun, verb, slang ·Very common ·Middle school level
Meaning at a glance
- Primary sense: A layer of impurities that accumulates at the surface of a liquid (especially molten metal or water).
- Grammar: scum is listed as name, noun, verb, slang.
- Nearest alternatives: aerate, algae, alluvion, alluvium.
- Useful contrasts: approval, clarify, clarity.
- Usage evidence: When the scum stops appearing pour the syrup back into a clean bottle and keep it in the fridge.
How to use "scum"
- Start with the primary definition, then check the part of speech before placing the word in a sentence.
- Compare nearby synonyms to make sure "scum" carries the exact meaning, tone, and strength you need.
- Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.
Meaning check
- Does the word fit the sentence's grammar?
- Does it match the intended tone rather than only the dictionary definition?
- Would a simpler synonym be clearer for the reader?
- Is there enough surrounding context to prevent ambiguity?
Source and review context
This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "scum" in a final draft.
If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.
Before you rely on this definition
Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "scum" as the right word for your sentence.
If your draft is formal, technical, persuasive, or sensitive, compare "scum" with a nearby alternative so the final choice matches both meaning and reader expectation.
Compare nearby meanings
- Use synonyms when you need a softer, stronger, simpler, or more specific word.
- Use antonyms to check the boundary of the meaning and avoid accidental contrast.
- Use the example sentence to confirm the word behaves naturally in context.
- Keep the original wording when a replacement adds complexity without improving precision.
Definition decision workflow
1. Identify the role
Check whether "scum" is acting as name, noun, verb, slang in your sentence. A definition is only useful when the grammar matches the way the word is being used.
2. Test the nearest option
Compare it with "aerate" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.
3. Confirm with context
Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.
Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.
Final meaning check
Before publishing a sentence with "scum", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.
When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.
Definitions
Noun
- 1 A layer of impurities that accumulates at the surface of a liquid (especially molten metal or water). uncountable
"During smelting, scum rises to the surface and is then removed by the smelter."
- 2 a film of impurities or vegetation that can form on the surface of a liquid wordnet
- 3 A greenish water vegetation (such as algae), usually found floating on the surface of ponds uncountable
"These organisms form scum in large quantities."
- 4 worthless people wordnet
- 5 The topmost liquid layer of a cesspool or septic tank. countable, uncountable
Show 2 more definitions
- 6 Semen. US, slang, uncountable
"Horse, who was always talking about facts, said, “Man, that can't be scum, ’cause scum is white.”"
- 7 A reprehensible person or persons. countable, derogatory, slang, uncountable
"People who sell used-up pens are scum, just total low-lives."
Verb
- 1 To remove the layer of scum from (a liquid etc.).
- 2 remove the scum from wordnet
- 3 To remove (something) as scum.
"Some scumd the drosse, that from the metall came; / Some stird the molten owre with ladles great[…]."
- 4 To become covered with scum.
"Take the smallest Cucumbers you can get, and as free from Spots as possible, put them into a strong Salt and Water for nine or ten Days, or 'till they are quite Yellow, and stir them twice a Day at least, or they will scum over, and grow soft"
- 5 To scour (the land, sea, etc.). obsolete
"SOo by Merlyns aduys ther were sente fore rydars to skumme the Countreye / & they mette with the fore rydars of the north / and made hem to telle whiche wey the hooste cam / and thenne they told it to Arthur / and by kyng Ban and Bors counceill they lete brenne and destroye alle the contrey afore them there they shold ryde"
Show 2 more definitions
- 6 To gather together, as scum. obsolete
"A great majority of the members are scummed together from the Jacobinical dregs of former periods of the revolution."
- 7 To startscum or savescum. informal
Proper Noun
- 1 Acronym of Society for Cutting Up Men. abbreviation, acronym, alt-of, historical
"The most extreme position in the late 1960s came from SCUM, the Society for Cutting Up Men, whose manifesto began, […]."
Antonyms
Example
"When the scum stops appearing pour the syrup back into a clean bottle and keep it in the fridge."
Common questions
What is a synonym for "scum"?
Common synonyms include: aerate, algae, alluvion, alluvium, androcyte, antheridium.
How do you use "scum" in a sentence?
When the scum stops appearing pour the syrup back into a clean bottle and keep it in the fridge.
How do you pronounce "scum"?
Pronounced /skʌm/.
Etymology
From Middle English scum, scome, skum, skome, scumme, from Middle Low German or Middle Dutch schūme (“foam”), from Old Dutch *scūm, from Frankish *skūm, from Proto-Germanic *skūmaz (“froth, foam”), from Proto-Indo-European *(s)kewH- (“to cover, conceal”). Cognate with Dutch schuim (“foam”), West Frisian skuum, German Schaum (“foam”), Danish and Swedish skum (“foam”). Compare also French écume (“scum”), Italian schiuma (“foam”), Saterland Frisian Skuum, Sicilian scuma (“foam”), Walloon schome (“scum, foam”), Lithuanian šamas (“catfish”) and skanus (“tasty”) from the same Germanic source. Related to skim.