Obs. rare. [ad. Gr. συμμαχία alliance in war, f. σύμμαχος adj. fighting together or in alliance, sb. an ally, f. σύν with + μάχη fight.]

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1623.  Cockeram, Symmachie, aide in warre.

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1658.  Phillips, Symmachy, a joyning in war against a common enemy.

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1864.  W. P. Dickson, trans. Mommsen’s Hist. Rome (ed. 2), I. vii. 415 Politically, the loose and refractory coalition could not stand a comparison with the firmly established Roman symmachy.

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1911.  A. Macphail, in Winnipeg Tribune, 15 July, 24/2. Happy as we are, or happy as we shall be, when, our ardent young men have coopered together “an aggregation of ‘equipollent’ bodies-politic within the magic circle of the Crown”, with a “symmachy” and a “hegemony”, each bound and each free, who can tell that this contraption, when contrived, would appeal to the humour of the Japanese for example?

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1918.  A. K. Davis, in Times Dispatch (Richmond, VA), 11 Aug., II. 4/5. Symmachy means a union of communities in war, an association of fighting units, a pooling of war-time interests, and a summing-up of battling activities.

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