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Noun: efficacy  efukusee
  1. Capacity or power to produce a desired effect
    "concern about the safety and efficacy of the vaccine"
    - efficaciousness

Derived forms: efficacies

See also: efficacious, inefficacious

Type of: effectiveness, effectivity, effectuality, effectualness

Antonym: inefficacy

Encyclopedia: Efficacy

Nearest

effervesce
effervescence
effervescent
effervescing
effete
effetely
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efficaciously
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efficacy
efficiency
efficiency apartment
efficiency engineer
efficiency expert
efficient
efficiently
effigy
effing
effleurage
effloresce