The word Nigled is misspelled against Niggled, which is past tense of "Niggle"
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Niggled has double "gg" is mispronounced as "g"
Remember double 'GG' in between the strings ni & led which should not be misspelled with single 'G'
Wrong Spelling:  ni-g-led 
Correct Spelling:  ni-gg-led 
Find more wrongly spelled words of Niggled to spell it well.