Ireversible or Irreversible: How To spell?
The word Ireversible is misspelled against Irreversible, an adjective meaning "Incapable of being reversed or turned about or back; incapable of being made to run backward; as, an irreversible engine."
Irreversible has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings i & eversible which should not be misspelled with single 'R'
Wrong Spelling:  i-r-eversible  Correct Spelling:  i-rr-eversible 
Find more wrongly spelled words of Irreversible to spell it well.