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SPANISH · A WORD WITH POSSIBILITIES

eficaz.

efficacious

6 characters3 syllables approx.Español language

Meaning & usage

adj/efiˈkaθ/[e.fiˈkaθ]/efiˈkas/[e.fiˈkas]

  1. efficacious

    feminine · masculine

  2. effective

    feminine · masculine
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 efficācembor. Spanish eficaz Borrowed from Latin efficācem.

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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.