GUARDIAN ADJ

Efficacious

Spanish

eficaz

Definition

having the power to produce a desired effect, especially in a medical context

Example

"โ€œWe wanted to make a repellent, which is highly efficacious, but also allows local people to be involved in the production cycle so that it costs a minimal amount of money,โ€ he said."

Antonyms

ineffective inefficient weak

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