How to Pronounce the Word Efficacy Properly

Efficacy means production of a desired result. If you really want to sound like a native english speaker and use this word efficacy and other words like we use them, you must get the daily vocabulary book seven package. To w w w dot study with tifany dot com right now and get your copy. Now let's see again how to pronounce this word properly. Try to use this word at least one time.