Superoyal or Superroyal: How To spell?
The word Superoyal is misspelled against Superroyal, an adjective meaning "Larger than royal; -- said of a particular size of printing and writing paper. See the Note under Paper, n."
Superroyal has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings supe & oyal which should not be misspelled with single 'R'
Wrong Spelling:  supe-r-oyal  Correct Spelling:  supe-rr-oyal 
Check more misspelled words of Superroyal to spell it correct.