Matering or Mattering: How To spell?
The word Matering is misspelled against Mattering, which is present continuous of "Matter"
Mattering has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings ma & ering which should not be misspelled with single 'T'
Wrong Spelling:  ma-t-ering  Correct Spelling:  ma-tt-ering 
Find more wrongly spelled words of Mattering to spell it well.