knavish

1. Not to be influenced by, or give ear to knavish tattling servants, or others.
   不听不老实的仆人之流搬弄是非的话，更不受他们影响。
2. It offers little or no direct incentives for improvement to the knavish or self-interested professional or manager;
   这对欺骗的或自谋利益的专业人士或管理人员来说，没有或者少有直接的动力去改善；

adj

1. marked by skill in deception
   1. cunning men often pass for wise
   2. deep political machinations
   3. a foxy scheme
   4. a slick evasive answer
   5. sly as a fox
   6. tricky Dick
   7. a wily old attorney

   Synonym:    craftycunningdodgyfoxyguilefulslickslytricksytrickywily