Another Word For Efficacy

Meaning

The word "efficacy" refers to the ability to produce a desired or intended result or effect. It is often used in contexts such as medicine, research, and general performance, indicating how effectively something works.

Synonyms

• Effectiveness
• Efficiency
• Potency
• Success
• Capability

Antonyms

• Ineffectiveness
• Inefficiency
• Inability
• Failure
• Uselessness

Etymology

The term "efficacy" comes from the Latin word "efficacia," derived from "efficax," which means "effective" or "able to accomplish." The root "facere" means "to do" or "to make."

Examples

1. The efficacy of the new vaccine was confirmed through extensive clinical trials.
2. Researchers are assessing the efficacy of various teaching methods in improving student performance.
3. The efficacy of the drug was questioned after several participants reported minimal benefits.
4. In marketing, measuring the efficacy of an advertisement is crucial for determining its success.