Iregular or Irregular: How To spell?
The word Iregular is misspelled against Irregular, a noun meaning "One who is not regular; especially, a soldier not in regular service."
Irregular has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings i & egular which should not be misspelled with single 'R'
Wrong Spelling:  i-r-egular  Correct Spelling:  i-rr-egular 
Check more misspelled words of Irregular to spell it correct.