VENEFICIAL
Source: 566, 567
veneficial. Veneficial, a. acting by poison, bewitching
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{ Ven′e‐fi″cial (?), Ven′e‐fi″cious (?), } a. Acting by poison; used in poisoning or in sorcery. “An old veneficious practice.” Sir T. Browne. — Ven′e‐fi″cious‐ly, adv.