Milifold or Millifold: How To spell?
The word Milifold is misspelled against Millifold, an adjective meaning "Thousandfold."
Millifold has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings mi & ifold which should not be misspelled with single 'L'
Wrong Spelling:  mi-l-ifold  Correct Spelling:  mi-ll-ifold 
Find more incorrect spellings of Millifold to spell right way.