The word Johny is misspelled against Johnny, a noun meaning "A familiar diminutive of John."
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Johnny has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings joh & y which should not be misspelled with single 'N'
Wrong Spelling:  joh-n-y 
Correct Spelling:  joh-nn-y 
Find more incorrect spellings of Johnny to spell right way.