internecine

Of or relating to struggle within a nation, organization, or group.

Mutually destructive; ruinous or fatal to both sides.

Characterized by bloodshed or carnage.

Destructive; deadly; accompanied with much slaughter.

Involving, or accompanied by, mutual slaughter; mutually destructive.

Of or pertaining to internal conflicts within a group.

Mutually destructive; most often applied to warfare.

Characterized by struggle within a group, usually applied to an ethnic or familial relationship.

characterized by bloodshed and carnage for both sides

(of conflict) within a group or organization