Preveil or Prevail: How To spell?
The word Preveil is misspelled against Prevail, a verb meaning "To be in force; to have effect, power, or influence; to be predominant; to have currency or prevalence; to obtain; as, the practice prevails this day."
Word contains consecutive vowels 'AI' in between alphabets prev & l is misspelled as 'EI'Wrong Spelling:  prev-ei-l  Correct Spelling:  prev-ai-l 
Find more wrongly spelled words of Prevail to spell it well.