The word "fancy" itself has a long history and comes from Old French. It's a word that has evolved over time and has different meanings depending on context.
If you're looking for a word with a similar meaning to "fancy," you might consider using prefixes like:
* Extra- (extravagant, extraordinary)
* Super- (superb, superlative)
* Pre- (prefer, pretentious)
It really depends on the specific nuance you're trying to convey.