禍根

祸根
huògēn
  1. root of the trouble
  2. cause of the ruin

CEDICT

root of the trouble; cause of the ruin

Wiktionary

禍害的根源。

重編國語辭典

Entry Composition

1 禍 huò
  1. disaster
  2. misfortune
  3. calamity
2 根 gēn
  1. root
  2. basis
  3. classifier for long slender objects, e.g. cigarettes, guitar strings
  4. radical (chemistry)

classifier: 條