Nonatendance or Nonattendance: How To spell?
The word Nonatendance is misspelled against Nonattendance, a noun meaning "A failure to attend; omission of attendance; nonappearance."
Nonattendance has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings nona & endance which should not be misspelled with single 'T'
Wrong Spelling:  nona-t-endance  Correct Spelling:  nona-tt-endance 
Find more incorrect spellings of Nonattendance to spell right way.