15-letter words starting with effi
- efficaciousness — capable of having the desired result or effect; effective as a means, measure, remedy, etc.: The medicine is efficacious in stopping a cough.
- efficient cause — a person or thing that acts, happens, or exists in such a way that some specific thing happens as a result; the producer of an effect: You have been the cause of much anxiety. What was the cause of the accident?
On this page, we collect all 15-letter words starting with EFFI. It’s easy to find right word with a certain length. It is the easiest way to find 15-letter word that beginning with EFFI to use in Scrabble or Crossword puzzles.