fantasy in WordNet English dictionary

1. something many people believe that is false
   "they have the illusion that I am very wealthy"
   illusion  fantasy  phantasy  fancy 
   
2. imagination unrestricted by reality
   "a schoolgirl fantasy"
   fantasy  phantasy 
   
3. fiction with a large amount of imagination in it
   "she made a lot of money writing romantic fantasies"
   fantasy  phantasy 
   

1. indulge in fantasies
   "he is fantasizing when he says he plans to start his own company"
   fantasy  fantasize  fantasise