The word Grudger is misspelled against Gruddger, a noun meaning "One who grudges."
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Gruddger has double "dd" is mispronounced as "d"
Remember double 'DD' in between the strings Gru & ger which should not be misspelled with single 'D'
Wrong Spelling:  Gru-d-ger 
Correct Spelling:  Gru-dd-ger 
Check more misspelled words of Gruddger to spell it correct.