internecine

/ˌɪntərˈnɛsin/
adjective
  1. Relating to conflict or struggle within a group, organization, or country; causing destruction to both sides involved.
    • The country suffered through a decade of internecine warfare that devastated its cities.
    • Internecine disputes within the company led to the loss of many talented employees.
    • The political party was torn apart by internecine fighting between its leaders.
Antonyms
What does "internecine" mean? | whatsthatwordmean | whatsthatwordmean