Synonyms for Avid (same or very similar meaning)
WordNet sense 1 ((often followed by `for') ardently or excessively desirous):
esurient, greedy, devouringWordNet sense 2 (having or expressing desire for something):
desirous, wishfulWordNet sense 3 (marked by active interest and enthusiasm):
eager, great, zealousFrom the ODE community, based on WordNetadd/edit