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LATIN · A WORD WITH POSSIBILITIES

efficacia.

effectiveness; efficiency; accomplishment (Ecc); power, influence; efficacy;

9 characters4 syllables approx.Latina language

Meaning & usage

noun[ɛf.fɪˈkaː.ki.a]Classical-Latin[ef.fiˈkaː.t͡ʃi.a]

  1. efficacy, effectiveness, efficiency

    declension-1

  2. virtue

    declension-1

  3. power

    declension-1
Where this word comes from

Etymology tree Proto-Indo-European *h₁éǵʰ Proto-Indo-European *-s Proto-Indo-European *h₁éǵʰs Proto-Italic *eks Latin ex Latin ex- Proto-Indo-European *dʰeh₁- Proto-Indo-European *dʰeh₁k- Proto-Indo-European *-yéti Proto-Indo-European *dʰh₁kyéti Proto-Italic *θakjō Proto-Italic *fakjō Latin faciō Latin efficiō Proto-Indo-European *-eh₂ks Proto-Italic *-āks Latin -āx Latin efficāx Proto-Indo-European *-(i)yós Proto-Italic *-ijos Proto-Italic *-ios Old Latin -ios Latin -ius Latin -ia Latin efficācia From efficāx + -ia.

adj[ɛf.fɪˈkaː.ki.a]Classical-Latin[ef.fiˈkaː.t͡ʃi.a]

  1. nominative/accusative/vocative neuter plural of efficāx

    accusative · form-of · neuter · nominative · plural · vocative
Where this word comes from

Etymology tree Proto-Indo-European *h₁éǵʰ Proto-Indo-European *-s Proto-Indo-European *h₁éǵʰs Proto-Italic *eks Latin ex Latin ex- Proto-Indo-European *dʰeh₁- Proto-Indo-European *dʰeh₁k- Proto-Indo-European *-yéti Proto-Indo-European *dʰh₁kyéti Proto-Italic *θakjō Proto-Italic *fakjō Latin faciō Latin efficiō Proto-Indo-European *-eh₂ks Proto-Italic *-āks Latin -āx Latin efficāx Proto-Indo-European *-(i)yós Proto-Italic *-ijos Proto-Italic *-ios Old Latin -ios Latin -ius Latin -ia Latin efficācia From efficāx + -ia.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.