詭計多端

诡计多端
guǐjìduōduān
  1. deceitful in many ways (idiom); wily and mischievous
  2. full of craft and cunning

CEDICT

to have many crafty plots

Wiktionary

有各式各樣狡猾陰險的壞主意。《三國演義．第一一七回》：「維詭計多端，詐取雍州。」也作「詭變多端」。

重編國語辭典

有各式各樣狡猾陰險的計謀

維基詞典

Entry Composition

1 詭計 guǐjì
  1. trick
  2. ruse
  3. crafty scheme
2 多端 duōduān
  1. multifarious
  2. multifold
  3. many and varied
  4. multiport
  5. multistation
  6. multiterminal