Misionaries or Missionaries: How To spell?
The word Misionaries is misspelled against Missionaries, which is plural of "Missionary"
Missionaries has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings mi & ionaries which should not be misspelled with single 'S'
Wrong Spelling:  mi-s-ionaries  Correct Spelling:  mi-ss-ionaries 
Find more incorrect spellings of Missionaries to spell right way.