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efficāx ācis, adj. with comp. and sup.

ex + 2 FAC-, efficacious, effectual, powerful, efficient : scientia (magica), H.: ad muliebre ingenium preces, L.: necessitas efficacior quam ratio, Cu.: in quibus (rebus) peragendis continuatio efficacissima, L.: amara Curarum eluere, H.

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