Definition of acharnement in English:

acharnement

noun

archaic
  • [mass noun] Bloodthirsty fury or ferocity.

Origin

French, from acharner give a taste of flesh to a dog, falcon, etc., from charn, archaic variant of chair, from Latin caro, carn- flesh.

Pronunciation:

acharnement

/əˈʃɑːnmɒ̃/