criminal; extremely bad 罪恶的；不道德的 nefarious activities 罪恶活动 They can hack your account and use the information for nefarious purposes. 他们可以入侵您的帐户，并将这些信息用于恶意目的。
Oxford Collocations DictionaryNefarious is used with these nouns:- scheme
Word Originearly 17th cent.: from Latin nefarius, from nefas, nefar- ‘wrong’ (from ne- ‘not’ + fas ‘divine law’) + -ous.