Hairspliting or Hairsplitting: How To spell?
The word Hairspliting is misspelled against Hairsplitting, a noun meaning "The act or practice of making trivial distinctions."
Hairsplitting has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings hairspli & ing which should not be misspelled with single 'T'
Wrong Spelling:  hairspli-t-ing  Correct Spelling:  hairspli-tt-ing 
Find more wrongly spelled words of Hairsplitting to spell it well.