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🇯🇵Japanese Source WordCode: JA

有効性

Pronunciation / Transliteration: yūkōsei

🇬🇧 Direct English Meaning:
Efficacy/ˈɛf.ɪ.kə.si/
nounCEFR C1 (Advanced)Top #4500 frequency
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🇯🇵 Example Sentence in Japanese:

"その新薬の有効性が臨床試験で確認された。"

Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    The ability to produce a desired or intended result, especially in scientific, medical, or technical contexts.

    "Clinical trials are currently evaluating the efficacy of the new vaccine against emerging variants."
  2. 2

    The power or capacity to produce an effect; effectiveness.

    "The committee debated the efficacy of introducing stricter regulations to curb pollution."
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Thesaurus & Semantic Spectrum

Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the Latin 'efficacia', stemming from 'efficax' (effective) and the verb 'efficere' (to accomplish or bring about). It entered the English language in the late 15th century, initially used largely in theological and medical contexts to denote the capacity or power to produce a desired effect.

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