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English definition of “sinful”

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sinful

adjective uk   /ˈsɪn.fəl/ us  
against the rules of a religion or morally wrong: He confessed that he had sinful thoughts. Buying that sports car was a sinful waste of money. informal used to refer to something that is very pleasant, but very bad for you: This cream cake is sinful!
sinfully
adverb uk   /-i/ us  
sinfulness
noun [U] uk   /-nəs/ us  
(Definition of sinful from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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