Boyishnes or Boyishness: How To spell?
The word Boyishnes is misspelled against Boyishness, a noun meaning "The manners or behavior of a boy."
Boyishness has double 'ss' in the end mispronounced as 's'Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  boyishne-s  Correct Spelling:  boyishne-ss 
Find more incorrect spellings of Boyishness to spell right way.