sly·ness
noun/ˈslaɪnəs/
/ˈslaɪnəs/
[uncountable]- (disapproving) behaviour that is secret and dishonest, often intending to trick people
狡猾：机密和不诚实的行为，通常旨在欺骗人们 - behaviour that suggests that you know something secret that other people do not know
狡猾：暗示您知道别人不知道的秘密的行为