English dictionary
Hint: Question mark (?) is a wildcard. Question mark substitutes one character.
English noun: efficacy | |||
| 1. | efficacy (attribute) capacity or power to produce a desired effect | ||
| Samples | Concern about the safety and efficacy of the vaccine. | ||
| Synonyms | efficaciousness | ||
| Broader (hypernym) | effectiveness, effectivity, effectuality, effectualness | ||
| Attribute | efficacious, inefficacious | ||
| Antonyms | inefficaciousness, inefficacy | ||
Based on WordNet 3.0 copyright © Princeton University.
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Web design: Orcapia v/Per Bang. English edition: .
2025 onlineordbog.dk