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scum

Pronunciation: /skʌm/

Definition of scum

[mass noun]

a layer of dirt or froth on the surface of a liquid:green scum found on stagnant pools
informal a worthless or contemptible person or group of people:you drug dealers are the scum of the earth

[with object]

form a layer of dirt or froth on (a liquid):litter scummed the surface of the water
[no object] (of a liquid) become covered with a layer of dirt or froth:the lagoon scummed over

Derivatives

Middle English: from Middle Low German, Middle Dutch schūm, of Germanic origin

Definition of scum in the US English dictionary

Nearby words

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