Intereign or Interreign: How To spell?
The word Intereign is misspelled against Interreign, a noun meaning "An interregnum."
Interreign has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings inte & eign which should not be misspelled with single 'R'
Wrong Spelling:  inte-r-eign  Correct Spelling:  inte-rr-eign 
Find more wrongly spelled words of Interreign to spell it well.