Asistant or Assistant: How To spell?
The word Asistant is misspelled against Assistant, a noun meaning "An attendant; one who is present."
Assistant has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings a & istant which should not be misspelled with single 'S'
Wrong Spelling:  a-s-istant  Correct Spelling:  a-ss-istant 
Find more wrongly spelled words of Assistant to spell it well.