Pleonness or Plainness: How To spell?
The word Pleonness is misspelled against Plainness, a noun meaning "The quality or state of being plain."
Word contains consecutive vowels 'AI' in between alphabets pl & nness is misspelled as 'EO'Wrong Spelling:  pl-eo-nness  Correct Spelling:  pl-ai-nness 
Find more incorrect spellings of Plainness to spell right way.