Pleonant or Plainant: How To spell?

The word Pleonant is misspelled against Plainant, a noun meaning "One who makes complaint; the plaintiff."

Word contains consecutive vowels 'AI' in between alphabets pl & nant is misspelled as 'EO'
Wrong Spelling:  pl-eo-nant 
Correct Spelling:  pl-ai-nant 
Find more incorrect spellings of Plainant to spell right way.

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