efficax

== Latin == === Etymology === From efficiō (“I make out, work out”) +‎ -āx (“inclined to”). === Pronunciation === (Classical Latin) IPA(key): [ˈɛf.fɪ.kaːks] (modern Italianate Ecclesiastical) IPA(key): [ˈɛf.fi.kaks] === Adjective === efficāx (genitive efficācis, adverb efficāciter); third-declension one-termination adjective efficacious, effectual, powerful, efficient ==== Declension ==== Third-declension one-termination adjective. ==== Derived terms ==== ==== Descendants ==== →⇒ English: efficacious → French: efficace → Italian: efficace → Portuguese: eficaz → Romanian: eficace → Spanish: eficaz === References === “efficax”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press “efficax”, in Charlton T. Lewis (1891), An Elementary Latin Dictionary, New York: Harper & Brothers "efficax", in Charles du Fresne du Cange, Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887) “efficax”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.