[Fr. n. of action, f. acharne-r to give a taste of flesh (to dogs, falcons, etc.) Included as a technical military term in James’s Mil. Dict., 1816, which professed to give ‘the explanation of military terms in English, with the admixture of French words.’] Eagerness for blood, bloodthirsty fury, ferocity.

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1816.  James, Mil. Dict. (ed. 4), Acharnement, Fr., the rage and frenzy to which soldiers are subjected in the heat of an engagement.

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1830.  Caledonian Merc., Sept. 30. The extraordinary acharnement of the Belgians against their Government.

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1833.  Blackw. Mag., XXXIII. 502. The dreadful acharnement which marked the war on both sides—the acharnement of long-hoarded vengeance and maddening remembrances.

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1854.  Badham, Prose Halieutics, 46. Leaping at it with all the acharnement of dogs on a boar’s back.

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1857.  De Quincey, Wks., VII. 299. The Jewish acharnement against the Christians … would be inflamed to a frantic excess.

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