scum
noun/skʌm/
/skʌm/
- [uncountable, singular] a layer of bubbles or an unpleasant substance that forms on the surface of a liquid
- Skim off any scum.
- stinking water covered by a thick green scum
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- [uncountable, plural] (informal, offensive) an offensive word for people who you think are very bad
- Don't waste your sympathy on scum like that.
- Drug dealers are the scum of the earth (= the worst people there are).
Word OriginMiddle English: from Middle Low German, Middle Dutch schūm, of Germanic origin.
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scum