English Dictionary
Definition of “efficacious”
efficacious (ˌɛfɪˈkeɪʃəs
)
Definitions
adjective
- capable of or successful in producing an intended result; effective as a means, remedy, etc
Alternative Forms
ˌeffiˈcaciously adverb ˌeffiˈcaciousness noun Word Origin
C16: from Latin efficāx powerful, efficient, from efficere to achieve; see effect
Synonyms
View thesaurus entry
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effective,
successful,
efficient,
powerful,
useful,
active,
capable,
adequate,
productive,
operative,
potent,
competent,
serviceable,
effectual,
Usage examples
The man seemed stronger, so perhaps JoJo's fever drench had been efficacious after all.
Murray, Stephen, Death and Transfiguration (1994)Among American experts on stroke there is overwhelming consensus that tPA is efficacious.
British Medical Journal (2002)"A quick and easy implant gives them a more humane, cost-effective choice that leaves their dogs intact but is equally efficacious.
Mail and Guardian (2004)Right idea; An efficacious prescription for the Labour Party; Leading Article
Times, Sunday Times (2002)There is no single, efficacious `magic bullet" for the traumatic syndromes.
Herman, Judith Lewis, Trauma and Recovery (1992)
