Definition of efficacious Efficacious
/ɛˌfʌkejˈʃʌs/ - [efukeyshus] - ef•fi•ca•cious
We found 5 definitions of efficacious from 4 different sources.
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What does efficacious mean?
WordNet
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| efficacious - marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough" | ||
| inefficacious lacking the power to produce a desired effect; "laws that are inefficacious in stopping crime" | ||
| effectual, efficacious, effective marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough" | ||
| efficaciousness, efficacy capacity or power to produce a desired effect; "concern about the safety and efficacy of the vaccine" | ||
| efficacious - 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" | ||
| effective, effectual | ||
| uneffective, ineffective, ineffectual lacking the ability or skill to perform effectively; inadequate; "an ineffective administration"; "inefficient workers" | ||
| efficacious marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough" | ||
| efficient being effective without wasting time or effort or expense; "an efficient production manager"; "efficient engines save gas" | ||
| potent, stiff, strong having a strong physiological or chemical effect; "a potent toxin"; "potent liquor"; "a potent cup of tea", "a stiff drink" | ||
| powerful having great power or force or potency or effect; "the most powerful government in western Europe"; "his powerful arms"; "a powerful bomb"; "the horse's powerful kick"; "powerful drugs"; "a powerful argument" | ||
| utile, useful being of use or service; "the girl felt motherly and useful"; "a useful job"; "a useful member of society" | ||
| effectivity, effectuality, effectualness, effectiveness power to be effective; the quality of being able to bring about an effect | ||
| hard-hitting, trenchant aggressively and persistently persuasive; "a hard-hitting advertising campaign"; "a high-pressure salesman" | ||
| impelling markedly effective as if by emotional pressure; "impelling skill as a teller of tales"; "an impelling personality" | ||
| impressive, telling producing a strong effect; "gave an impressive performance as Othello"; "a telling gesture" | ||
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Wiktionary 
- efficacious (Adjective)
effective.
Webster DictionaryWebster's Unabridged Dictionary 📘
- efficacious (n.)
Possessing the quality of being effective; productive of, or powerful to produce, the effect intended; as, an efficacious law.
Chambers DictionaryChamber's 20th Century Dictionary 📕
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efficacious
ef-fi-kā′shus, adj. able to produce the result intended.—adv. Efficā′ciously.—ns. Efficā′ciousness; Efficac′ity; Ef′ficacy, virtue: energy. [Fr.,—L. efficax, efficacis—efficĕre.]
