efficacious
pronunciation
How to pronounce efficacious in British English:
UK [ˌefɪˈkeɪʃəs]
How to pronounce efficacious in American English:
US [ˌɛfɪˈkeʃəs]
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- Adjective:
- marked by qualities giving the power to produce an intended effect
- producing or capable of producing an intended result or having a striking effect
Word Origin
- efficacious
- efficacious: see effect
- efficacious (adj.)
- "sure to have the desired effect" (often of medicines), 1520s, from Latin efficaci-, stem of efficax "effectual, powerful" (see efficacy) + -ous. Related: Efficaciously; efficaciousness.
Antonym
Example
- 1. Criteriafor inclusion in the panel are the existence of a reliable screenand an efficacious treatment
- 2. Jack kemp lauded his former aide : " it will be proven the most efficacious of all the reforms . "
- 3. He points out that conventional medicines must be shown to be both safe and efficacious before they can be licensed for sale .
- 4. The need for an on-demand efficacious medication for the treatment of pe has led to the development of dapoxetine for this specific use .
- 5. He said the movement must accommodate itself with the existing international reality and be nimble and efficacious in tacking its goals .