[1] : WordNet (r) 2.0

maven
     n : someone who is dazzlingly skilled in any field syn: ace,
         adept, champion, sensation, mavin, virtuoso, genius,
          hotshot, star, superstar, whiz, whizz, wizard,
          wiz
see also:
ace adept champion sensation mavin virtuoso 
genius hotshot star superstar whiz 
whizz wizard wiz 

[2] : Moby Thesaurus II by Grady Ward, 1.0

28 moby thesaurus words for "maven":
   adept, amateur, arbiter, arbiter elegantiarum, arbiter of taste,
   authority, bon vivant, cognoscente, collector, connaisseur,
   connoisseur, critic, dab, dabster, dilettante, epicure, epicurean,
   expert, good judge, gourmand, gourmet, judge, master, past master,
   professional, proficient, refined palate, virtuoso

Maven >> M Words
Maven, definition of term: Maven
maven_pag1.html