The word Shudering is misspelled against Shuddering, which is present continuous of "Shudder"
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Shuddering has double "dd" is mispronounced as "d"
Remember double 'DD' in between the strings Shu & ering which should not be misspelled with single 'D'
Wrong Spelling:  Shu-d-ering 
Correct Spelling:  Shu-dd-ering 
Check more misspelled words of Shuddering to spell it correct.