Prosaost or Prosaist: How To spell?

The word Prosaost is misspelled against Prosaist, a noun meaning "A writer of prose; an unpoetical writer."

Word contains consecutive vowels 'AI' in between alphabets pros & st is misspelled as 'AO'
Wrong Spelling:  pros-ao-st 
Correct Spelling:  pros-ai-st 
Find more incorrect spellings of Prosaist to spell right way.

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