Ireversibly or Irreversibly: How To spell?
The word Ireversibly is misspelled against Irreversibly, an adverb meaning "In an irreversible manner."
Irreversibly has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings i & eversibly which should not be misspelled with single 'R'
Wrong Spelling:  i-r-eversibly  Correct Spelling:  i-rr-eversibly 
Find more wrongly spelled words of Irreversibly to spell it well.