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slimeball

noun [C usually singular]
 
 
/ˈslaɪm.bɔːl/ US  /-bɑːl/ informal

Definition

a very unpleasant person whose friendly manner is not sincere: How can she go out with him? He's such a slimeball!Unpleasant people in generalUnpleasant men
(Definition of slimeball noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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