Imarcescible or Immarcescible: How To spell?
The word Imarcescible is misspelled against Immarcescible, an adjective meaning "Unfading; lasting."
Immarcescible has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings i & arcescible which should not be misspelled with single 'M'
Wrong Spelling:  i-m-arcescible  Correct Spelling:  i-mm-arcescible 
Find more wrongly spelled words of Immarcescible to spell it well.