Definition of internecive in English:

internecive

adjective

rare
  • Of a conflict: (originally) mutually destructive or antagonistic; (now chiefly) taking place within a group or society, internal.

Origin

Early 19th century; earliest use found in Sydney Smith (1771–1845), author and wit. From classical Latin internecīvus fought to the death, devastating, murderous from interneciō + -īvus.

Pronunciation

internecive

/ˌɪntəˈniːsɪv/