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efficacious

ef·fi·ca·cious / ˌefiˈkāshəs/ • adj. formal (typically of something inanimate or abstract) successful in producing a desired or intended result; effective: the vaccine has proved both efficacious and safe. DERIVATIVES: ef·fi·ca·cious·ly adv. ef·fi·ca·cious·ness n.

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"efficacious." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 12 Dec. 2017 <http://www.encyclopedia.com>.

"efficacious." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (December 12, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/efficacious-0

"efficacious." The Oxford Pocket Dictionary of Current English. . Retrieved December 12, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/efficacious-0

efficacious

efficacious XVI. f. L. efficāx, -āc, f. efficere; see EFFECT, -ACIOUS.
So efficacity XV. — F. — L. efficient making a thing what it is XIV; adequately operative or skilled XVIII. —prp. of L. efficere. efficiency XVI.

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"efficacious." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. 12 Dec. 2017 <http://www.encyclopedia.com>.

"efficacious." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. (December 12, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/efficacious-1

"efficacious." The Concise Oxford Dictionary of English Etymology. . Retrieved December 12, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/efficacious-1

efficacious

efficaciousfactious, fractious •anxious • captious •precious, semi-precious •infectious •conscientious, contentious, licentious, pretentious, sententious, tendentious •Athanasius, audacious, bodacious, cactaceous, capacious, carbonaceous, contumacious, Cretaceous, curvaceous, disputatious, edacious, efficacious, fallacious, farinaceous, flirtatious, foliaceous, fugacious, gracious, hellacious, herbaceous, Ignatius, loquacious, mendacious, mordacious, ostentatious, perspicacious, pertinacious, pugnacious, rapacious, sagacious, salacious, saponaceous, sebaceous, sequacious, setaceous, spacious, tenacious, veracious, vexatious, vivacious, voracious •facetious, Lucretius, specious •adventitious, Aloysius, ambitious, auspicious, avaricious, capricious, conspicuous, delicious, expeditious, factitious, fictitious, flagitious, judicious, lubricious, malicious, Mauritius, meretricious, nutritious, officious, pernicious, propitious, repetitious, seditious, siliceous, superstitious, suppositious, surreptitious, suspicious, vicious •noxious, obnoxious •conscious, subconscious, unselfconscious •cautious, tortious •atrocious, ferocious, precocious •Confucius • luscious •bumptious, scrumptious •compunctious, rambunctious

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"efficacious." Oxford Dictionary of Rhymes. . Encyclopedia.com. 12 Dec. 2017 <http://www.encyclopedia.com>.

"efficacious." Oxford Dictionary of Rhymes. . Encyclopedia.com. (December 12, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/efficacious

"efficacious." Oxford Dictionary of Rhymes. . Retrieved December 12, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/efficacious