How to Say "it's effective" in Spanish
The Spanish word for “it's effective” is “funciona” — B1 level. This is a very common word in everyday Spanish.
English → SpanishB1
VerbB1
describing a solution or medicine

Examples
Tu idea funciona, ¡es genial!
Your idea works, it's brilliant!
La nueva estrategia de marketing funciona muy bien.
The new marketing strategy is working very well.
Nuestra relación ya no funciona.
Our relationship isn't working anymore.
Related Translations
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