Iresistible or Irresistible: How To spell?
The word Iresistible is misspelled against Irresistible, an adjective meaning "That can not be successfully resisted or opposed; superior to opposition; resistless; overpowering; as, an irresistible attraction."
Irresistible has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings i & esistible which should not be misspelled with single 'R'
Wrong Spelling:  i-r-esistible  Correct Spelling:  i-rr-esistible 
Find more wrongly spelled words of Irresistible to spell it well.