Why this word is great
ACHARNEMENT — [Noun] Savage fierceness; relentless ferocity, often with a connotation of bloodlust. From French acharnement, derived from acharner ("to make fierce or bloodthirsty"), itself from charnier ("to flesh, to excite to bloodshed"), from Latin carnārius ("pertaining to flesh"). Unlike "fury" (which flares and fades) or "tenacity" (which grinds without malice), acharnement is a cold, sustained violence—the wolf’s unbroken stare as it circles a wounded stag, the butcher’s methodical cleaving of sinew from bone, the way a mob, once roused, will not stop until the last stone is thrown. It is the terrible patience of cruelty, the flesh remembering its own hunger.