Ballonist or Balloonist: How To spell?

The word Ballonist is misspelled against Balloonist, a noun meaning "An aeronaut."

Balloonist has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings ball & nist which should not be misspelled with single 'O'
Wrong Spelling:  ball-o-nist 
Correct Spelling:  ball-oo-nist 
Find more incorrect spellings of Balloonist to spell right way.

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