15-letter words starting with eff
- 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?
- effort syndrome — an anxiety reaction characterized by quick fatigue, shortness of breath, rapid heartbeat, dizziness, and other cardiac symptoms, but not caused by disease of the heart.
- effort-syndrome — an anxiety reaction characterized by quick fatigue, shortness of breath, rapid heartbeat, dizziness, and other cardiac symptoms, but not caused by disease of the heart.
On this page, we collect all 15-letter words starting with EFF. It’s easy to find right word with a certain length. It is the easiest way to find 15-letter word that beginning with EFF to use in Scrabble or Crossword puzzles.