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also adz, Middle English adese, adse, from Old English adesa "adze, hatchet," of unknown origin, perhaps somehow related to Old French aisse, Latin ascia "axe" (see ax). Spelling with -z- is from 18c. Adze "has been monosyllabic only since the seventeenth century. The word has no cognates, though it resembles the names of the adz and the hammer in many languages" [Liberman, 2008].