Enthusiastic appreciation for something is more than just liking it — it's loving it. You're an enthusiastic fan of Italian food if you not only like it, you can't live without it.
Enthusiastic's Greek origins paint a vivid picture of how an enthusiastic person got that way, as the word literally means "possessed by a god." You may recognize the "god" part of the word — theos, as in theology — "the study of God." If you're enthusiastic about working on your vocabulary words, you don't have to be reminded to do it — you can't wait.
adj having or showing great excitement and interest
characterized by strong enthusiasm
marked by active interest and enthusiasm
crazy, dotty, gaga, wild
intensely enthusiastic about or preoccupied with
marked by ardent or zealous enthusiasm for a cause
very enthusiastic and dedicated
having or expressing strong emotions
displaying animation, vigor, or liveliness