SCUM

(IMMORAL PERSON) [noun] [plural] scum disapproving [slang] - a very bad or immoral person or group of peopleAnyone who could do something like that is scum. [U]People who organize dog fights are scum in my opinion! [U]Do you know what that scum has done now? [C]Those scum have been robbing old people. [C]You scum! How dare you accuse me of lying! [as form of address]His boss treats him like scum (= very badly). [U]Those men are the scum of the earth (= the worst type of people that can be imagined).