General synonyms:
* Efficient: Implies using resources wisely and achieving results with minimal waste.
* Productive: Emphasizes the successful creation of results or output.
* Successful: Focuses on achieving the desired outcome.
* Powerful: Suggests a strong and impactful effect.
More specific synonyms:
* Impactful: Emphasizes the ability to make a significant difference.
* Fruitful: Suggests that something yields positive results.
* Viable: Indicates something is practical and capable of working.
* Working: Simple and straightforward, emphasizes the functionality.
To choose the best synonym, consider the specific meaning you want to convey:
* "The new marketing campaign was effective in increasing brand awareness." You might use impactful or successful to emphasize the campaign's positive results.
* "She's an effective manager, getting the most out of her team." You could use efficient or productive to highlight her managerial skills.
Ultimately, the best synonym will depend on the specific context and the desired emphasis.