The word Duny is misspelled against Dunny, an adjective meaning "Deaf; stupid."
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Dunny has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings du & y which should not be misspelled with single 'N'
Wrong Spelling:  du-n-y 
Correct Spelling:  du-nn-y 
Check more misspelled words of Dunny to spell it correct.