The word Prosast 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 'A'
Wrong Spelling:  pros-a-st 
Correct Spelling:  pros-ai-st 
Find more incorrect spellings of Prosaist to spell right way.