(adjective) marked by slaughter; deadly / (adjective) mutually destructive / (adjective) of, relating to, or involving conflict within a group
We must create a Europe that does not squander its blood and strength on internecine conflict, but forms a compact unity.
a young couple as they teeter around the Idea of Christmas, trying to avoid internecine festive warfare
the internecine and corrupt entanglements of major investment banks, hedge funds and shadowy para-financial firms,
Lost in this internecine dispute
Internecine warfare, a failure to control the prices of primary commodities, an inability to overcome the suffocation of finance capital, and more led to a crisis in the budgets of much of the Third World.
internecine struggle within the Marxist coalition,