Mischosing or Mischoosing: How To spell?
The word Mischosing is misspelled against Mischoosing, which is present continuous of "Mischoose"
Mischoosing has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings misch & sing which should not be misspelled with single 'O'
Wrong Spelling:  misch-o-sing  Correct Spelling:  misch-oo-sing 
Find more incorrect spellings of Mischoosing to spell right way.