Spellcheck.net

Definitions of efficacious

  1. Possessing the quality of being effective; productive of, or powerful to produce, the effect intended; as, an efficacious law. Webster Dictionary DB
  2. Efficaciously. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  3. producing or capable of producing an intended result or having a striking effect; "an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation"-LewisMumford; "effective teaching methods"; "effective steps toward peace"; "made an effective entrance"; "his complaint proved to be effectual in bringing action"; "an efficacious law" Wordnet Dictionary DB
  4. Producing, or capable of producing, a desired effect. The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919.
  5. Able to produce the result intended. The american dictionary of the english language. By Daniel Lyons. Published 1899.
  6. Having efficacy; effective; effectual. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  7. Adequate to produce the effect intended. Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914.
  8. Producing the effect intended; effectual. Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.

Usage examples for efficacious

  1. There is nothing efficacious against that kind but prayer and the crucifix. – Story of My Life, volumes 1-3 by Augustus J. C. Hare
  2. This treatment, which medical science has found so eminently successful in typhoid fever, would prove equally efficacious in all other acute diseases if the regular doctors would only try it. – Nature Cure by Henry Lindlahr
X