The word Matering is misspelled against Mattering, which is present continuous of "Matter"
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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.