Omitance or Omittance: How To spell?
The word Omitance is misspelled against Omittance, a noun meaning "The act of omitting, or the state of being omitted; forbearance; neglect."
Omittance has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings omi & ance which should not be misspelled with single 'T'
Wrong Spelling:  omi-t-ance  Correct Spelling:  omi-tt-ance 
Find more wrongly spelled words of Omittance to spell it well.