efficacy
/,efi'keiʃəsnis/ Cách viết khác : (efficacy) /'efikəsi/
Definition
Noun The capacity or power to produce a desired effect or result. It refers to the effectiveness of something in achieving its intended purpose.
Usage and Examples
Noun * The study confirmed the efficacy of the new teaching method in improving student engagement. * Before approval, a drug must undergo rigorous testing to prove its efficacy and safety. * Many people question the efficacy of that policy in solving the underlying economic issues.
Advanced Usage
- "Demonstrate/Prove efficacy": To show through evidence that something works.
- Clinical trials are designed to demonstrate the efficacy of a new treatment.
- "Question/Doubt the efficacy of": To express uncertainty about whether something is effective.
- Some scientists doubt the efficacy of the proposed environmental measures.
Variants and Related Words
- Efficacious (adjective): Having the power to produce a desired effect; effective.
- An efficacious remedy for the common cold has yet to be found.
- Inefficacy (noun): The state of not being able to produce a desired effect; lack of efficacy.
- The report highlighted the inefficacy of the previous regulations.
Synonyms
- Effectiveness: The degree to which something is successful in producing a desired result.
- Potency: The power of something to influence or bring about a result.
- Efficiency (Note: While related, "efficiency" often emphasizes achieving maximum productivity with minimum wasted effort, whereas "efficacy" focuses on the ability to produce the desired outcome itself).
Antonyms
- Inefficacy: Lack of power to produce the desired effect.
- Ineffectiveness: The quality of not producing any significant or desired effect.
Noun
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capacity or power to produce a desired effect
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concern about the safety and efficacy of the vaccine
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