Translation of "فاعلية" in English

a little bit of a high achiever, overachiever.

And the sauna is perhaps even more effective

and more powerful than what I was doing.

rated the drug's overall severity to be significantly lower

I used a standard team survey measure to asses the team effectiveness,

Their most effective tool was the media.

And what we found was that cannabis was most effective

is so much more powerful than just telling them.

You might find it to be a far more efficient solution

We also found that among the people for whom cannabis was most effective,

Napoleon put Oudinot back where he was  most effective, leading troops in combat  

and we found that by far, the most effective light was infrared.