efficacy

Từ điển WordNet v3.1 - WordNet Dictionary

noun

capacity or power to produce a desired effect (Freq. 6)
- concern about the safety and efficacy of the vaccine
• Syn:
efficaciousness
• Ant:
inefficacy
• Derivationally related forms:
efficacious (for: efficaciousness), efficacious
• Hypernyms:
effectiveness, effectivity, effectualness, effectuality
• Attrubites:
efficacious, inefficacious

• Từ trái nghĩa / Antonyms:
  inefficacy, inefficaciousness