Transcription
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- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
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- [ef-i-kuh-see]
- /ˈɛf ɪ kə si/
- /ˈef.ɪ.kə.si/
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- US Pronunciation
- US IPA
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- [ef-i-kuh-see]
- /ˈɛf ɪ kə si/
Definitions of efficacy word
- noun plural efficacy capacity for producing a desired result or effect; effectiveness: a remedy of great efficacy. 1
- noun efficacy The ability to produce a desired or intended result. 1
- abbreviation EFFICACY effectiveness 1
- uncountable noun efficacy If you talk about the efficacy of something, you are talking about its effectiveness and its ability to do what it is supposed to. 0
- noun efficacy the quality of being successful in producing an intended result; effectiveness 0
- noun efficacy power to produce effects or intended results; effectiveness 0
Information block about the term
Origin of efficacy
First appearance:
before 1520 One of the 28% oldest English words
1520-30; < Latin efficācia, equivalent to efficāc- (see efficacious) + -ia -y3
Historical Comparancy
Parts of speech for Efficacy
noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
efficacy popularity
A common word. It’s meaning is known to most children of preschool age. About 84% of English native speakers know the meaning and use the word.
Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".
efficacy usage trend in Literature
This diagram is provided by Google Ngram ViewerSynonyms for efficacy
noun efficacy
- adequacy — Adequacy is the quality of being good enough or great enough in amount to be acceptable.
- effectiveness — adequate to accomplish a purpose; producing the intended or expected result: effective teaching methods; effective steps toward peace.
- competence — Competence is the ability to do something well or effectively.
- virtue — moral excellence; goodness; righteousness.
- potency — the state or quality of being potent.
Antonyms for efficacy
noun efficacy
- inadequacy — Also, inadequateness [in-ad-i-kwit-nis] /ɪnˈæd ɪ kwɪt nɪs/ (Show IPA). the state or condition of being inadequate; insufficiency.
- ineffectiveness — not effective; not producing results; ineffectual: ineffective efforts; ineffective remedies.
- idleness — the quality, state, or condition of being lazy, inactive, or idle: His lack of interest in the larger world and his consummate idleness were the causes of their dreadful divorce.
- inactivity — not active: an inactive volcano.
- lethargy — the quality or state of being drowsy and dull, listless and unenergetic, or indifferent and lazy; apathetic or sluggish inactivity.
Top questions with efficacy
- what is self efficacy?
- what is efficacy?
- what does efficacy mean?
- what is collective efficacy?
- what is political efficacy?
- what does self efficacy mean?
- how to pronounce efficacy?
- what is high efficacy lighting?
- how self efficacy affects behavior?
- how to measure self efficacy?
- what is the definition of self efficacy?
- how do you pronounce efficacy?
- what is business efficacy?
- how to calculate vaccine efficacy?
- what is the difference between self esteem and self efficacy?
See also
Matching words
- Words starting with e
- Words starting with ef
- Words starting with eff
- Words starting with effi
- Words starting with effic
- Words starting with effica
- Words starting with efficac
- Words starting with efficacy