eficacia
“eficacia” means “effectiveness” in Spanish (the ability to produce a desired result).
effectiveness
Also: efficiency, potency
📝 In Action
La eficacia de la vacuna está probada.
A2The effectiveness of the vaccine is proven.
Queremos mejorar la eficacia de nuestro equipo de trabajo.
B1We want to improve the effectiveness of our work team.
El plan fue ejecutado con gran eficacia.
B2The plan was executed with great effectiveness.
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✏️ Quick Practice
Quick Quiz: eficacia
Question 1 of 3
Which of these phrases correctly uses the gender of 'eficacia'?
📚 More Resources
👥 Word Family▼
📚 Etymology▼
From the Latin 'efficacia', which comes from 'efficax' meaning 'powerful' or 'capable of doing'.
First recorded: 13th century
Cognates (Related words)
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Frequently Asked Questions
Is 'eficacia' more formal than 'efectividad'?
They are very similar. 'Eficacia' is often preferred in scientific or strictly logical contexts, while 'efectividad' is slightly more common in general conversation.
How do I say 'effectively'?
You can use the adverb 'eficazmente'.
Can I use 'eficacia' for people?
Usually, we use the adjective 'eficaz' to describe a person (He is effective). 'Eficacia' is the quality they possess.