Superteranean or Superterranean: How To spell?
The word Superteranean is misspelled against Superterranean, an adjective meaning "Being above ground."
Superterranean has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings superte & anean which should not be misspelled with single 'R'
Wrong Spelling:  superte-r-anean  Correct Spelling:  superte-rr-anean 
Check more misspelled words of Superterranean to spell it correct.