eficacia

See also: eficácia and eficàcia

Spanish

Etymology

From Latin efficacia.

Pronunciation

• IPA^(key): /efiˈkaθja/ [e.fiˈka.θja] (Equatorial Guinea, Spain)
• IPA^(key): /efiˈkasja/ [e.fiˈka.sja] (Latin America, Philippines)
• Rhymes: -aθja (Equatorial Guinea, Spain)
• Rhymes: -asja (Latin America, Philippines)
• Syllabification: e‧fi‧ca‧cia

Noun

eficacia f (plural eficacias)

1. efficacy
2. effectiveness

   Synonym: efectividad

Related terms

• eficaz

Further reading

• “eficacia”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025