Fantasticaly or Fantastically: How To spell?
The word Fantasticaly is misspelled against Fantastically, an adverb meaning "In a fantastic manner."
Fantastically has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings fantastica & y which should not be misspelled with single 'L'
Wrong Spelling:  fantastica-l-y  Correct Spelling:  fantastica-ll-y 
Find more wrongly spelled words of Fantastically to spell it well.